992results about "Machine tool components" patented technology

It is possible to stably supply an electric signal to an ultrasonic generation element without causing friction or damage on parts or without requiring periodical parts exchange. A reception coil (11) connected to a vibrator (6) is wound on the outer circumference of a housing (1) constituting a shaft (30) of a machining spindle (101). The reception coil (11) is surrounded coaxially by a transmission coil (12) at an appropriate interval. A predetermined electric signal outputted from an ultrasonic drive device (21) for driving the vibrator (6) is applied to the transmission coil (12). The predetermined electric signal may be applied to the vibrator (6) via the reception coil (11) by electromagnetic induction between the transmission coil (12) and the reception coil (11).

An apparatus for holding a workpiece having a support table, a plurality of elongated workpiece supports extendible from the support table, a plurality of a clamp assemblies, and a processing machine. Each clamp assembly is positioned about a portion of a corresponding workpiece support. The clamp assemblies are moveable between a clamping position wherein the clamp assemblies support the workpiece support in a selected vertical position and a non-clamping position wherein the workpiece supports are moveable so that the position of the workpiece support is changeable. The processing machine is in communication with the clamp assemblies for controlling the position of the clamp assemblies, and the processing machine has an end effector engageable with the workpiece supports above the support table to permit the processing machine to move the workpiece supports to selected positions when the clamp assemblies are in the non-clamping position.

The invention discloses an online milling deformation measurement and complementation machining method for a thin-walled part. The online milling deformation measurement and complementation machining method for the thin-walled part comprises the steps that 1, a three-dimensional model of the thin-walled part is established, and a numerical control code is obtained; 2, measurement point locations are extracted from the three-dimensional model; 3, based on the model, a measurement path is planned; 4, rough machining and semi-precise machining are conducted on a workpiece blank; 5, online measurement is conducted, and the coordinate values of all the planed measurement point locations are obtained; 6, the obtained coordinate values of the planed measurement point locations are compared with those of the corresponding point locations on the three-dimensional model of the thin-walled part, and the difference between the coordinates of each point location of the actually machined workpiece and those of the corresponding point location on the three-dimensional model is calculated; 7, according to the machining differences, a complementation factor optimal machining path is generated according to the machining differences, precise machining is conducted according to the path, and then the final deformation deviation and the compensation values are obtained. By the adoption of the online milling deformation measurement and complementation machining method, semi-precise machining and precise machining are adopted, the identical machining parameters are adopted by the semi-precise machining and the precise machining, and the best precise machining compensation effect of the thin-walled parts which are made of the same materials and have the same characteristics can be achieved to the greatest extent through only one group of tests.

The invention discloses a small high-speed five-axis linkage machine tool, which comprises a foundation structure, a spindle box component and a cradle type worktable. The spindle box component is supported on the foundation structure, and a crossbeam with a frame-shaped structure is arranged on two upright columns to form a bridge-type portal structure. The torque bearing capacity of the crossbeam is improved, the small high-speed five-axis linkage machine tool has all advantages of a five-axis linkage machine tool in the prior art, and carries identical machining reacting force, the volume of a structural part is reduced, and the weight of the structural part is greatly lightened; a spindle box is positioned between two transverse rods of the frame-shaped crossbeam, overturning moment is eliminated, and the stability of the machine tool can be guaranteed; in addition, sizes of various components are greatly reduced on the premise of identical machining capacity, and the stroke of the machine tool can be large in the design; and by the aid of the structure, the machining precision is greatly improved, the machining range is greatly expanded, better dynamic characteristics and higher feeding speed and higher cutting speed can be realized, cutting and machining time is greatly shortened, better surface machining quality is obtained, and machining efficiency is enhanced.

The present invention relates to an aligning fixture having a support with a reference surface, an aligning member and an actuator. The actuator is mounted to the support and operably coupled to the aligning member. The actuator moves the aligning member selectively to a first position wherein the element to be aligned is spaced apart from the reference surface and to a second position where the element can engage the reference surface.

There are provided a base frame 12 positioned below a horizontal axis O; a pair of clamp units 14 positioned at the two ends above the base frame; a pair of support units 16 that horizontally support the long workpiece in two locations, and that are capable of moving vertically; and machining units 18 that are capable of machining the long workpiece. The two clamp units 14 are capable of moving from the outside toward the inside, which support the long workpiece in two locations, and rotate around the horizontal axis O in synchronization with each other.

A milling head has a body, a holding device, a driving axle, a spraying device and a tool adaptor. The body has a base, a rear cover, a front cover, a bearing seat and a middle liner ring. The holding device is connected to the body and has a linking arm, a mounting jacket, a bottom cap, a positioning shaft and a locating spring. The driving axle is rotatably mounted in the body and has a transmission shaft and a driving bevel gear. The spraying device is mounted on the base and has a mounting cover and an spraying ball. The tool adaptor is rotatably mounted in the base below the spraying device and has a transmitting bevel gear, a holding head and a connecting segment.

A milling head (16) for a milling machine (1) arranged for machining large-size workpieces comprises a fork 18, which is rotatably arranged around a first axis (C) and demonstrates a pair of fork arms (21, 22), which are separated from one another, a spindle device (23), which is arranged between the fork arms and rotatable around a second axis A, a first torque motor (42), which is coupled to the fork 18 for directly driving and controlling of the rotation of the fork around the first axis (C), and a second torque motor (57) for driving and controlling the rotation of the spindle around the second axis (A), said second torque motor being coupled to the spindle device (23) by means of a one-stage toothed gearing (61), which is mechanically clamped free of backlash. The configuration according to the invention is arranged to achieve high torque with high dynamic stiffness and small interference contour of the milling head (16).

A machine tool for machining a workpiece is provided with a cutting tool holder for holding a cutting tool and a rotation mechanism for holding the workpiece. One or both of the cutting tool holder and the rotation mechanism are movable on multiple axes so that the cutting tool is movable relative to the workpiece in multiple axial directions. A control device is provided for controlling the movement of one or both of the cutting tool holder and the rotation mechanism to synchronously vibrate the workpiece and the cutting tool relative to each other at a low frequency in multiple axial directions.

A rotary table for a material processing machine such as a vertical milling machine utilizes direct drive motor(s) to precisely angularly position a work piece along one or more pivotal axes. The direct drive motor(s) are thermally insulated from the remainder of the machine to limit misaligning thermal expansion of the components of the machine. The motors may be symmetrically attached to their respective supports such that thermal expansion / contraction of the motor and surrounding components occurs symmetrically with respect to the motor to limit misalignment of the motor's rotational axis. A motor may mount to its respective support only at a first axial end thereof such that thermal expansion of a second axial end of the motor does not adversely shift the position of the first end. Axially narrow clamps selectively secure the rotors of the motors in desired positions.

A rotational power servo toolpost includes a plurality of rotational tool holders, which can freely rotate 360 degrees, to cut a workpiece from various angles. The rotational power servo toolpost has a turret base, a turret, tool holders mounted on a side surface of the turret and having a variety of needed tools, a tool-holder-rotating device, and a tool-rotating device. When the tool holder with the needed tool rotates along with the turret to the preset area, a servo motor of the tool-holder-rotating device drives the related members to freely rotate the tool holder around 360 degrees according to the machining requirements. The tool-driving device then drives the tool, thereby cutting the workpiece from various angles.

By causing the annular piston (42) to be freed, the piston return spring (54) comes to urge the annular piston (42) with the bottom face of its annular groove (50), so that the piston (42) retires backward and the floating pad return plate (62) contacts with the bracket (64) extending inward within the cylindrical bore (61) of the floating pad (60), thus urging the floating pad (60) backward. By the backward displacement of the floating pad (60), the floating pad (60) is forced to be departed from the brake disc (66).A circular dividing table equipped with such a brake assembly, it is possible to release the clamping members forcibly and to make the action of clamping or unclamping precisely and in a high responsive speed.

The present invention relates to an aligning fixture having a support with a reference surface, an aligning member and an actuator. The actuator is mounted to the support and operably coupled to the aligning member. The actuator moves the aligning member selectively to a first position wherein the element to be aligned is spaced apart from the reference surface and to a second position where the element can engage the reference surface.

A machine tool (10) has a Z table (18) sliding in the Z direction in a horizontal plane, a support body (22) provided on the Z table (18) and sliding in the vertical direction, a rotation arm (32) supported at the support body (22) and endlessly rotatable in a vertical plane facing work (W), an arm motor (34) for rotating the rotation arm (32), a processing spindle (36) rotatably supported and placed at a position of a distance R from the center C of rotation of the rotation arm (32), and a spindle motor (38) for rotating the processing spindle (36).

When a rotary table rotates, a main control section of a multi-tasking machine detects vibration of the rotary table on which a workpiece is mounted based on fluctuation of a position droop computed by a servo system. The main control section computes the arrangement position (the eccentricity amount and the eccentricity angle) of the workpiece with respect to the rotary table based on, for example, the detected vibration, the weight of the workpiece, and the rotation speed of the rotary table. The main control section computes the attachment position of a balancer with respect to the rotary table based on the computed arrangement position of the workpiece. Therefore, a suitable attachment position of a vibration suppressing balancer with respect to the rotary table is easily obtained.

Disclosed is a processing center multi-axis joint deflection loading apparatus comprising a load-receiving test piece and a load-exerting component. The load-exerting component is constituted by a steel ball, a cap, a ball socket, a bent board, a force sensor, a connection component A, and a connection component B. The connection component A is fixedly connected to a blade handle of the processing center; the blade handle is pulled tight within a bored hole on a main axle; and the connection component A is connected to a main housing via the connection component B. In a method using the apparatus for an inspection of static stiffness distribution, by means of a multi-axle joint movement, moving the load-exerting component and the load-receiving test piece to a preset loading position, allowing the normal at a load-receiving point on a load-receiving face of the load-receiving piece to be aligned with the axis of the ball socket; with the amount of shift measured by position-shift sensors fitted on the main axle, the main axle housing, and a working platform, and the amount of simulated load measured by the force sensor of the loaded-exerting component, deriving a stiffness measurement of the load-exertion position under a simulated load; changing the load-exertion position by means of a multi-axle joint movement, repeating in sequence the previous steps, thus deriving a stiffness distribution under the simulated load.

An automatic lathe (10) is provided with a first spindle (14) having an axis of rotation (14a), a first tool rest (18) capable of holding a plurality of tools (22) in a parallel arrangement, a second tool rest (20) capable of holding a plurality of tools (22) in parallel arrangements in a first row and second row exhibiting mutually different nose orientations, and a second spindle (16) having an axis of rotation parallel to the axis of rotation of the first spindle and capable of being located facing the first spindle, in such a manner as to be centrally carried on a lathe bed (12). The first spindle can move linearly along a first control axis parallel to its axis of rotation. The first tool rest can move linearly along a second control axis perpendicular to the first control axis. The second tool rest can move linearly along a third control axis perpendicular to the first control axis and a fourth control axis parallel to the first control axis. The second spindle can move linearly along a fifth control axis parallel to the third control axis and a sixth control axis parallel to the first control axis. A control unit (106) enables simultaneous performance of first machining work relating to the first spindle by a desired tool selected at the first tool rest, second machining work relating to the first spindle by a desired tool selected from the first row at the second tool rest, and third machining work relating to the second spindle by a desired tool selected from the second row at the second tool rest.

The invention discloses an air floatation type rotary table which comprises an air floatation shaft and an air floatation sleeve. The air floatation shaft comprises a shaft portion, a top portion and a bottom portion, wherein the top portion and the bottom portion are arranged at the two opposite ends of the shaft portion respectively, the top portion comprises upper thrust surfaces which are opposite to the bottom portion, and the bottom portion comprises lower thrust surfaces which are opposite to the top portion. The air floatation sleeve comprises upper air flotation surfaces which are located on the top portion and lower air flotation surfaces which are located on the bottom portion, wherein the upper air flotation surfaces are in clearance fit with the upper thrust surfaces, the lower air flotation surfaces are in clearance fit with the lower thrust surfaces, and the inner surface of the air flotation sleeve is in clearance fit with the outer surface of the shaft portion. A plurality of air outlets which are connected with an external high-pressure air source are formed in the inner surfaces of the upper air flotation surfaces, the inner surfaces of the lower air flotation surfaces and the inner surface of the air flotation sleeve. According to the air floatation type rotary table, due to the fact that the two opposite upper air flotation surfaces and the two opposite lower air flotation surface are arranged on the air flotation sleeve, the axial static rigidity, rotation rigidity and axial rotation precision of the air flotation type rotary table are improved, a workpiece, to be detected, placed on the rotary table can be located at a stable height all the time, and the height where the workpiece is located is not changed along with the change of the air pressure.

A tool turret includes a housing (10) for connection to a machine tool, and an electric drive motor (28). A tool disk (14), is mounted to rotate relative to the housing (10) about a longitudinal axis (34), may be fixed in selected angular positions, and has recesses (16) for machining tools (18). At least one rotating machining tool (18) may be driven by the drive motor (28) using shafts (24, 30), extending perpendicular to the longitudinal axis forming the swiveling axis of the tool disk (14). The electric drive motor (28) is arranged within the tool disk (14). The driveshaft (30) from the electric drive (28) is aligned with the driveshaft (24) for the machining tool (18), and is aligned with the driveshaft (24) for the machining tool (18) or extends parallel to it. An economical drive design for machining tools on a tool turret is achieved, with a small installation volume.

The support system and method enables exact and preferably machine assisted manual location and height placement of a vacuum operated hold down with rigid pre-set support on a conventional working table. A height adjustable jack screw support with angularly flexible hold down enables a holding support engaging the bottom of a work piece even where a lower surface of the work piece has an irregular shape due to the ability of the upper cup support to passively tilt to engage the work piece.

The invention relates to a roll ball high-speed milling electric main shaft, in particular to an electromechanically-integrated main shaft device which integrates a rolling bearing, a cooling device, an automatic cutter changing system and a motor driver. An upper bearing component (6) is fixed in an internal through hole of an upper bearing seat component (5) through an upper bearing locking nut (17); the front end of a step of the upper bearing seat component (5) is fixed together with the rear end of a machine body component (9); a lower bearing pressing ring (16) is fixed at the front end of a lower bearing component (10) through a lower bearing locking nut (15); and an encoder (18) for measuring rotating speeds is fixed at the rear end of a shaft core main body of a shaft core component (7). The electric main shaft has an adjustable rotating speed, high accuracy at a high rotating speed, advantages of insufficient axial and radial rigidity and the like and long service life and is convenient to popularize and apply.

There are provided a base frame 12 positioned below a horizontal axis O; a pair of clamp units 14 positioned at the two ends above the base frame; a pair of support units 16 that horizontally support the long workpiece in two locations, and that are capable of moving vertically; and machining units 18 that are capable of machining the long workpiece. The two clamp units 14 are capable of moving from the outside toward the inside, which support the long workpiece in two locations, and rotate around the horizontal axis O in synchronization with each other.

A milling head (16) for a milling machine (1) arranged for machining large-size workpieces comprises a fork 18, which is rotatably arranged around a first axis (C) and demonstrates a pair of fork arms (21, 22), which are separated from one another, a spindle device (23), which is arranged between the fork arms and rotatable around a second axis A, a first torque motor (42), which is coupled to the fork 18 for directly driving and controlling of the rotation of the fork around the first axis (C), and a second torque motor (57) for driving and controlling the rotation of the spindle around the second axis (A), said second torque motor being coupled to the spindle device (23) by means of a one-stage toothed gearing (61), which is mechanically clamped free of backlash. The configuration according to the invention is arranged to achieve high torque with high dynamic stiffness and small interference contour of the milling head (16).

An automatic tool changing method and an automatic tool changing device for a machine tool with a numerical controller capable of reducing the occurrence of impact due to tool exchange with a simple structure. A turret that rotates about a pivot shaft is provided on an arm and holds multiple tools. A swing cam CS that cooperates with a swing roller provided on the turret is provided on a spindle head. As the spindle head descends the turret rotates due to the action of the swing roller and the cam CS and exchanges tools. In order to lessen the impact that occurs at this time, the velocity of the spindle head is controlled. The ideal swing velocity pattern for the turret is obtained, and from this swing velocity pattern the swing position of the turret at each moment is obtained. From the swing roller and cam CS positions at this position the position of the spindle head 34 is obtained. From the acquired spindle head position the spindle head velocity pattern is obtained, and the spindle head is controlled using this velocity pattern. As a result, an ideal swing pattern can be achieved, and therefore no impact arises.

An automatic tool changing method and an automatic tool changing device for a machine tool with a numerical controller capable of reducing the occurrence of impact due to tool exchange with a simple structure. A turret that rotates about a pivot shaft is provided on an arm and holds multiple tools. A swing cam CS that cooperates with a swing roller provided on the turret is provided on a spindle head. As the spindle head descends the turret rotates due to the action of the swing roller and the cam CS and exchanges tools. In order to lessen the impact that occurs at this time, the velocity of the spindle head is controlled. The ideal swing velocity pattern for the turret is obtained, and from this swing velocity pattern the swing position of the turret at each moment is obtained. From the swing roller and cam CS positions at this position the position of the spindle head 34 is obtained. From the acquired spindle head position the spindle head velocity pattern is obtained, and the spindle head is controlled using this velocity pattern. As a result, an ideal swing pattern can be achieved, and therefore no impact arises.

The invention provides a liquid nitrogen inner spraying type cutter handle device, belongs to the design field of machine tools, and relates to a machine tool cutter handle device which achieves the purpose of cold low-temperature cutting through the fact that liquid nitrogen flows in an inner cavity of a cutter handle to a fine hole near a cutting edge of a hollow cutter rod to be sprayed out. The liquid nitrogen inner spraying type cutter handle device is composed of a left cutter handle peripheral assembly, a right cutter handle peripheral assembly and a cutter handle assembly. The left cutter handle peripheral assembly and the right cutter handle peripheral assembly are sequentially arranged on the outer circular face of the cutter handle and are locked by end nuts. In the liquid nitrogen inner spraying type cutter handle device, the surfaces of parts in contact with the liquid nitrogen are subjected to heat insulation material modified treatment, and the heat transferring capacity of the parts is lowered. The liquid nitrogen inner spraying type cutter handle device solves the problem that liquid nitrogen conveying is inconvenient for a workpiece with a complex structure in an existing outer spraying type liquid nitrogen cutting liquid device. The defect that the liquid nitrogen is low in utilization rate is overcome, the purpose that a common built-in type cutting liquid system achieves inner spraying of liquid nitrogen cutting liquid is achieved, the machining precision of difficult-to-machine materials machined by a machine tool is guaranteed, and the machining range of a numerical control machine tool is widened.

To provide a machine tool in which a workpiece can be delivered to / from a first and a second spindle headstock without any increase in front / back direction dimension of a machine main body. A second spindle headstock 4 is capable of moving to a position for workpiece delivery to / from a first spindle headstock 3 so as to be close to or to abut on the first spindle headstock 3. When the second spindle headstock 4 is positioned at the workpiece delivery position, a tool post 5 is positioned right under the first spindle headstock 3 so that its cutting point “c” is positioned vertically under an axis “a” of the first and second spindle headstocks 3, 4.