Abstract: The present invention provides a method and apparatus for supplying process liquid s for a machine tool, which are able to reduce the consumption power and power factor of the pump 21 to a large extent in comparison with prior arts while maintaining the effects of process liquid s according to prior arts. The invention is embodied so that process liquid s such as coolant or cleaning fluid is supplied to necessary points by causing the process liquid s to flow down, which is stored in a sub tank 20 installed at a suitable height in a machine tool, by a gravity action when intermittently supplying the process liquid s such as coolant or cleaning fluid to the necessary points such as a workrest 2 and a workpiece w fixed thereon; the supplied process liquid s is collected into a main tank 19 on the other hand; and the process liquid s stored in the main tank 19 is transferred into the sub tank 20 by the pump 21.

Abstract: A spindle device of a machine tool capable of stably injecting atomized cutting fluid from the tip of a tool device 13 when a variation in fluidity of the atomized cutting fluid occurs temporarily in atomized cutting fluid passages e1, e2 or the supply of the atomized cutting fluid into the atomized cutting fluid passage e1 is stopped and restarted, wherein the atomized cutting fluid passages e1, e2 having a single passage cross section are formed in the area ranging from the spindle 1 to the tip of the tool device 13 through the atomized cutting fluid passages e1, e2, and a vacant chamber group transmission layer part 14 having a large number of vacant chambers 142 stacked thereon in multiple stages or in the state of communicating with each other and allowing the atomized cutting fluid to pass therethrough through the groups of the vacant chambers 142 is formed in the atomized cutting fluid passage e1 or e2.

Abstract: A spindle device of a machine tool capable of preventing coolant mist from being excessively liquefied in an area between a mist outlet member 23 and near the rear end part of a tool 29, wherein a straight feed pipe 14 formed of a double tube having an inside tube 14a and an outside tube 14b is inserted into an inside hole formed at the center part of a spindle 2 in non-rotating state not coming into contact with the spindle, coolant is fed to the inside tube 14a, compressed air is fed to the outside tube 14b, and a mist generating member 16 is formed of both tubes near the inside tip part of the spindle, a mist outlet member 23 is installed into the outside tube 14b integrally with each on the mist outlet passage c of the mist generating member 16 so as to surround the mist outlet passage and a mist guiding extension member 24 allowed to reach near the rear end part of the tool in the center hole of the tool holder is installed, integrally with the spindle, on the other tool holder 8 side, and the mist guidi

Abstract: The wasting of cutting fluid mists and contamination of a machining environment with cutting fluid mists are prevented by feeding optimum amounts of cutting fluid mists in a variety of machining operations.

Abstract: A main shaft device for machine tools designed to prevent the wasting of cutting fluid mists and contamination of a machining environment with cutting fluid mists by feeding optimum amounts of cutting fluid mists in a variety of machining operations, comprising a mist feed tube (14) disposed in the rotational center of a main shaft (2) driven for rotation, the front of the mist feed tube (14) being inserted in the rotational center of a tool holder (8) fixed to the front of the main shaft (2) to ensure that the cutting fluid mists flowing out of the front end of the mist feed tube (14) spout from the front end surface of a cutting tool (17) fixed to the tool holder (8), via a mist passageway (h1) in the tool holder (8), the main shaft device being characterized in that the mist feed tube (14) has an adjusting nozzle member (16) removably fixed to the front thereof for controlling the flow rate of the cutting fluid mists flowing out of the feed tube (14) into the mist passageway of the tool holder (8).

Abstract: A cutting tool device for a machine tool having a cutting tool (2) for cutting a plane fixed to the tip end of a rotating shaft (1) and provided with a suction cover (10) covering airtightly the surrounding portions except for a tip face (a), of the cutting tool (2), wherein a hood (19) is attached to the tip opening edge of the suction cover (10) so as to further extend forward therefrom and to be displaceable longitudinally within a limited range, and an urging means (24) for urging the hood (19) forward is provided, whereby chips (w1) produced by the cutting tool (2) can be positively sucked and discharged when the tool is used in any of a roughing step and a finishing step.

Abstract: A machine tool capable of performing an accurate machining by preventing a second saddle 6 from displacing aslant to suppress the vibrations of a spindle head 8, wherein a column 2 is fixedly installed on bed 1, a first saddle 4 is movably guided by the column 2 in vertical direction f1, a second saddle 6 is movably guided by the first saddle 4 in lateral direction f2, a spindle head 8 is movably guided by the second saddle 6 in longitudinal direction 18, and interfitted guide route devices 5A, 5B, 5C for guiding the second saddle 6 in lateral direction f2 are formed at the rear lower position of the first saddle 4 as well as at the front upper and lower positions of the first saddle 4.

Abstract: A column fixed type machine tool capable of surely suppressing the dispersion of chips and coolant to the outside of a machining space and reducing the entire size thereof so as to increase a workability and improve a working environment, wherein a column (2) is installed fixedly on a bed (1), a spindle head (8) is installed at the front of the column movably in vertical, lateral and longitudinal directions (f1, f2, f3), a jig device (42) is installed on the bed at the front of the column, a column side cover body (cov1) densely covering the front surface of the column is provided so as to protect against the dispersion of chips, the cover body is formed so as to allow the spindle head (8) to be moved in vertical and lateral directions, a jig side cover body (cov2) covering at least the surrounding of a jig main body part (47) is installed, an intermediate cover body (cov3) covering the upper and right and left sides of the spindle head moving range is installed between the jig side cover body and the column

Abstract: A multispindle machine tool, characterized in that outside cylindrical members (19) having a plurality of spindles (2) and fixed to a support frame (3b) are inserted into the center holes (2c) of the spindles, a mist generator (22) for generating lubricant mist in the spindles and inside cylindrical members (20) having the mist generator fixed to the tip thereof are installed on the inside of the outside cylindrical members so as to be withdrawn the outside cylindrical members held in fixed state so that, under the installed state, the mist generator can generate the lubricant mist since compressed air and liquid lubricant are separately fed from the outsides of the spindles thereto through the outside cylindrical members and the inside cylindrical members and the inside cylindrical members and, under the withdrawn state, the lubricant mist is fed from the outsides to the insides of the spindles through the outside cylindrical members to jet out the mist from the tips of the cutters fixed to the tips of the s

Abstract: A machine tool capable of jetting atomized lubricant (h) forward from the tip of a cutter (17), characterized by comprising a lubricant jetting state detector for detecting the jetting state of the atomized lubricant from the tip of the cutter, the lubricant jetting state detector further comprising a guide member (21) having a straight inner hole (21a), wherein a light detection means for detecting the degree of transmission or reflection of the detection light due to injecting the direction light (c) to a specified position (b) inside the inner hole through a transparent member installed on the peripheral wall portion of the guide member or through the transparent peripheral wall portion of the guide member, and a fluid feed means (23) for feeding clean fluid of rather thin layer flowing in a specified direction along the longitudinal direction of the inner hole is installed near the inner surface of the transparent member or so as to cover the transparent peripheral wall portion, whereby a defective part d

Abstract: The wasting of cutting fluid mists and contamination of a machining environment with cutting fluid mists are prevented by feeding optimum amounts of cutting fluid mists in a variety of machining operations.

Abstract: A main shaft device for machine tools designed to prevent the wasting of cutting fluid mists and contamination of a machining environment with cutting fluid mists by feeding optimum amounts of cutting fluid mists in a variety of machining operations, comprising a mist feed tube (14) disposed in the rotational center of a main shaft (2) driven for rotation, the front of the mist feed tube (14) being inserted in the rotational center of a tool holder (8) fixed to the front of the main shaft (2) to ensure that the cutting fluid mists flowing out of the front end of the mist feed tube (14) spout from the front end surface of a cutting tool (17) fixed to the tool holder (8), via a mist passageway (h1) in the tool holder (8), the main shaft device being characterized in that the mist feed tube (14) has an adjusting nozzle member (16) removably fixed to the front thereof for controlling the flow rate of the cutting fluid mists flowing out of the feed tube (14) into the mist passageway of the tool holder (8).

Abstract: The present invention provides a method and apparatus for supplying process liquid s for a machine tool, which are able to reduce the consumption power and power factor of the pump 21 to a large extent in comparison with prior arts while maintaining the effects of process liquid s according to prior arts. The invention is embodied so that process liquid s such as coolant or cleaning fluid is supplied to necessary points by causing the process liquid s to flow down, which is stored in a sub tank 20 installed at a suitable height in a machine tool, by a gravity action when intermittently supplying the process liquid s such as coolant or cleaning fluid to the necessary points such as a workrest 2 and a workpiece w fixed thereon; the supplied process liquid s is collected into a main tank 19 on the other hand; and the process liquid s stored in the main tank 19 is transferred into the sub tank 20 by the pump 21.

Abstract: A tool holder for machine tool capable of surely preventing the cutting fluid oil, fed into a passage through-hole (e) in a tool holder main body (1), from leaking the connection part between a cutter (10) and the tool holder during the machining of a workpiece; the cutter used in the tool holder; and a tool driver used in the tool holder; the tool holder for machine tool, comprising the passage through-hole (e) at the rotating center part (x) of the holder main body (1), allowing the cutter (10) having a cutting fluid path (e5) formed therein to be inserted into the front part of the passage through-hole (e), and being formed so that the cutter (10) is fixed by a fixing means (3) fitted to the tip of the holder main body (1), wherein a cylindrical female surface part for sealing (10b) is formed at the rear end part of the cutter (10), a cylindrical female surface part for sealing (e3a) allowing the cylindrical male surface part for sealing (10b) to be inserted closely therein is formed in the passage through

Abstract: A spindle device of a machine tool capable of preventing coolant mist from being excessively liquefied in an area between a mist outlet member 23 and near the rear end part of a tool 29, wherein a straight feed pipe 14 formed of a double tube having an inside tube 14a and an outside tube 14b is inserted into an inside hole formed at the center part of a spindle 2 in non-rotating state not coming into contact with the spindle, coolant is fed to the inside tube 14a, compressed air is fed to the outside tube 14b, and a mist generating member 16 is formed of both tubes near the inside tip part of the spindle, a mist outlet member 23 is installed into the outside tube 14b integrally with each on the mist outlet passage c of the mist generating member 16 so as to surround the mist outlet passage and a mist guiding extension member 24 allowed to reach near the rear end part of the tool in the center hole of the tool holder is installed, integrally with the spindle, on the other tool holder 8 side, and the mist guidi

Abstract: The present invention prevents coolant from leaking out of a valve (23) after a feed pump (4) stops feeding the coolant, and diminishes a time-lag between the onset of feeding the coolant and mist generation, when the feed pump (4) starts feeding the coolant again. In the machine tool of this invention, the coolant is fed from a feed pump (4) into a mist generating device (13) provided on the tip of a spindle (8) by way of a feed line (7), and a valve (23) is provided at an inflow part for coolant of the mist generating device (13) to be closed when the coolant pressure within the feed line (7) lowers below a fixed level. A coolant sucking and delivering (2) sucks a fixed amount of coolant in the feed line (7), when the feed pump (4) stops feeding the coolant. On the other hand, the device (2) feeds a fixed amount of coolant into the feed line (7), when the feed pump (4) begins feeding the coolant.

Abstract: A spindle device of a machine tool stably spouting spray coolant from the tip of a tool (26) in a tool holder (25) and suppressing a waste of the spray coolant, wherein the tool holder (25) is fixed to the tip part of a spindle (2) mechanically detachably through a clamp device (KR), an extension passage (101) is formed in the state that an in-spindle spray coolant passage (100) formed in the center part of the spindle (2) is extended forward (f2), and the in-spindle spray coolant passage (100) is formed to communicate with an in-holder spray coolant passage (102) formed in the center part of the tool holder (25) through the extension passage (101).

Abstract: The present invention is characterized by a coolant feeding device of a machine tool that supplies coolant to a mist generating device (10) at the tip of a spindle (9) through a coolant feed line (40). A coolant forcing means (11) is provided to the tip of the spindle near the mist generating device to force out the coolant inside a cylinder chamber (21) through a valve path (20). The coolant inside the feed line is repeatedly fed into the cylinder chamber, whereas the coolant forced out from the cylinder chamber is fed into the mist generating device at proper pressure. When the coolant pressure inside the feed line is below a fixed level, the coolant inside the feed line flows into the cylinder chamber. When the coolant pressure inside the feed line is over a fixed level, the coolant inside the cylinder chamber is forced out to the mist generating device.

Abstract: A machine tool capable of performing an accurate machining by preventing a second saddle 6 from displacing aslant to suppress the vibrations of a spindle head 8, wherein a column 2 is fixedly installed on a bed 1, a first saddle 4 is movably guided by the column 2 in vertical direction f1, a second saddle 6 is movably guided by the first saddle 4 in lateral direction f2, a spindle head 8 is movably guided by the second saddle 6 in longitudinal direction f3, and guide route means 5A, 5B, 5C for guiding the second saddle 6 in lateral direction f2 are formed at the rear lower position of the first saddle 4 as well as at the front upper and lower positions of the first saddle 4.

Abstract: A spindle device of a machine tool capable of stably injecting atomized cutting fluid from the tip of a tool device 13 when a variation in fluidity of the atomized cutting fluid occurs temporarily in atomized cutting fluid passages e1, e2 or the supply of the atomized cutting fluid into the atomized cutting fluid passage e1 is stopped and restarted, wherein the atomized cutting fluid passages e1, e2 having a single passage cross section are formed in the area ranging from the spindle 1 to the tip of the tool device 13 through the atomized cutting fluid passages e1, e2, and a vacant chamber group transmission layer part 14 having a large number of vacant chambers 142 stacked thereon in multiple stages or in the state of communicating with each other and allowing the atomized cutting fluid to pass therethrough through the groups of the vacant chambers 142 is formed in the atomized cutting fluid passage e1 or e2.