摘要:
A three-point support guide (1) for a wire electrode 100 in a wire electric discharge machine, which includes first and second guide members (20, 60) each formed of a small, thin diamond. The first guide member (20), is supported in the body (10) of the guide (1) so as to face a wire electrode bore (12). A movable member (40) is provided which is movable toward and away from the first guide member (20). The second guide member (60) is embedded in the movable member (40) so as to face the first guide member (20). The second guide member (60), in conjunction with the first guide member (20), provides three-point support of the wire electrode (100).
摘要:
The electric discharge machining apparatus of the wire-cutting type comprises a wire-treating unit (48) movable in the horizonal direction relative to an upper wire guide member (12) between the upper wire guide member and a work table (10) to traverse a wire electrode (W) extending downward from a wire passage (13) of the upper wire guide member. The wire-treating unit has a base block (55) and a movable block (56) that can approach to and separate from the base block to define a slit (60) and a nozzle hole (61) that can be opened and closed between the two blocks. The slit extends in the horizontal moving direction of the wire-treating unit to receive the wire electrode therein. The nozzle hole can be connected to the lower end of the wire passage of the upper wire guide member, and the nozzle hole is constructed so that a spray liquid supplied into the wire passage of the upper wire guide member can be injected into a wire passage (15) of a lower wire guide member (14). The wire-treating unit comprises a wire-detecting device (66) for detecting the end of the wire electrode between the base block and the movable block and wire-cutting means (62) for cutting the wire electrode between the base block and the movable block.
摘要:
A wire electrode electrical discharge machine includes an initial hole forming device mounted on a frame unit attached to the vertical slider of the electrical discharge machine; the initial hole forming head is vertically movable on the frame unit and has a rotary chuck for holding a hollow bar electrode; electrical switches on the frame unit generate signals upon the detection of the initial hole forming head being position at an initial hole forming position and at a resting position in its vertical movement on the frame unit and lateral movement of the upper wire guiding unit toward the initial hole forming head is inhibited while the initial hole forming head is located at the initial hole forming position.
摘要:
A wire-cut electrical discharge machine for machining a workpiece (W) through wire-cut electrical discharge machining by employment of an electrode wire (60) which runs from one to the other of upper and lower guide assemblies each having a cooling liquid supply passage (62) and a main passage (64) communicating with the cooling liquid supply passage (62). At least either the upper guide assembly or the lower assembly is provided with a restrictor valve (68) provided in a branch passage (66) branched from the main passage (64) and capable of varying the effective sectional area of the liquid passage of its own according to the pressure of the cooling liquid supplied from the cooling liquid supply passage (62) into the branch passage. The cooling liquid that passed the restrictor valve (68) is introduced into the vicinity of the feeder pin (42) of the guide assembly to cool the feeder pin (42) and the electrode wire running in the vicinity of the feeder pin (42).
摘要:
A rotary moto actuator with a base 22, a table 21, a stator 25 and a rotor 26 of a rotary motor 31 and a first member 12 and a second member 14 of a guide mechanism 24 that have a plurality of base segments 22a, a plurality of table segments 21a, a plurality of stator segments 25a, a plurality of rotor segments 26a, a plurality of first member segments 12a and a plurality of second member segments 14, respectively, which all arranged circumferentially around a center line C. The stator segments 25a are connected to the base segments 22a, to which the first member segments 12a are connected. The rotor segments 26a are connected to the table segments 21a, to which the second member segments 14a are connected.
摘要:
A distributed-arrangement linear motor in which stators are arranged in a distributed manner and a method of controlling the distributed-arrangement linear motor are provided. The linear motor 1 is a linear motor in which a stator and a movable member are relatively movable, wherein the stator and the movable member respectively have periodic structures in which plural kinds of poles of the stator and the movable member (12a, 12b, 12c) (22a, 22b, 22c) which magnetically act each other and arranged periodically subsequently in an order according to the arrangement in a direction of the relative motion therebetween; a plurality of stators are arranged in a distributed manner in the direction of the relative motion; a distance D1, D2 between adjacent stators is not more than a length Lmv of the movable member; the pole of the stator is formed of a coil 11; and a current control unit that controls current to be supplied to the coil based on the distance between the stators is provided.
摘要:
A rotary table device includes a cooling structure and a rotary bearing provided with a cooling structure. A rotary table device provided with a cooling structure includes a hollow motor as a drive source, a table rotated by the hollow motor, and a rotary bearing supporting rotational motion of the table, in which the rotary bearing includes an outer ring having an inner peripheral surface to which a rolling surface is formed, an inner ring having an outer peripheral surface to which a rolling surface facing the rolling surface of the outer ring is formed, and a number of rolling members in a rolling passage formed by the rolling surface of the outer ring and the rolling surface of the inner ring, and a heat sink is formed to either one of the inner and outer rings.
摘要:
An X-Y table actuator is constituted by stacking a stationary plate, an intermediate plate, and a movable plate. Between the stationary plate and the intermediate plate, arranged is an X-direction drive means for driving the intermediate plate in an X-direction with respect to the stationary plate. Between the intermediate plate and the movable plate, on the other hand, there is provided a Y-direction drive means for moving the movable plate forward and backward in a Y-direction with respect to the intermediate plate. By stacking the stationary plate and the movable plate, which are formed into a substantially channel-shape, and the intermediate plate, which is formed into a substantially flat-shape on each other, a housing chamber for the X-direction drive means is formed between the stationary plate and the intermediate plate, and a housing chamber for the Y-direction drive means is formed between the intermediate plate and the movable plate.
摘要:
By reviewing a material of a forcer housing and an assembly structure of a coil member with respect to the forcer housing, a thrust force is increased, an optimum shape can be easily given to the forcer housing depending on a purpose of use, and a linear motor can be manufactured at low cost. The linear motor includes a magnet rod composed of a large number of magnetic poles arranged with predetermined pitches along an axial direction and a forcer having a through-hole into which the magnet rod is loosely inserted and reciprocatable relatively to the magnet rod according to an applied electric signal. The forcer is composed of a forcer housing in which the through-hole is defined and a coil member which is arranged on an inner peripheral surface of the through-hole of the forcer housing and to which the electric signal is applied. The forcer housing is formed by mold forming with an insulating nonmetal inorganic material.
摘要:
A linear actuator with a dustproof mechanism provides reliable dustproof capability over the entire stroke of the actuator. A linear actuator 100 with a dustproof mechanism includes a ball screw, a movable stage 4 including a ball screw nut that engages the ball screw, the movable stage capable of making linear reciprocating motion in the axial direction of the ball screw in response to rotary motion of the ball screw, a housing member 2 disposed to cover at least the ball screw, openings 27, 28 formed in the housing member 2 along the path along which the movable stage 4 travels, and dustproof belts 29, 30 disposed inside the housing member 2 to block the openings 27, 28. The linear actuator 100 with a dustproof mechanism further includes end plate covers 105a, 105b that cover both ends of the housing member 2 and hence has high dustproof performance.