2225results about "Driving apparatus" patented technology

A switchable rotation drive device has a switching mechanism wherein a first connecting sleeve that always rotates integrally with a motor hollow rotor, and a second connecting sleeve that always rotates integrally with a planetary carrier of a planetary gear reduction mechanism are connected via a bearing in a relatively rotatable state, and the first connecting sleeve is formed with a sun gear. By sliding the switching mechanism, the output shaft can be switched between high-speed rotation and low-speed rotation. In comparison to a case in which the entirety of the planetary gear reduction mechanism is made to slide, the sliding region may be smaller, and the required space needed to allow sliding may also be smaller. Therefore, it is advantageous to reduce the size of the device and make it more compact.

A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The gear transmission mechanism has a high speed position and a low speed position. The control system is coupled to the gear transmission mechanism for detecting an operating characteristic of the power tool to actuate a ring gear to automatically move from the high speed position to the low speed position and to reduce the rotational speed of the ring gear when the operating characteristic exceeding a predetermined value.

The invention relates to a large gantry polar-coordinate digital-control milling, hobbing and grinding gear combined machine adopting a beam both-side bearing structure by respectively hanging a milling gear headstock and a hobbing and grinding gear headstock at the left side and the right side of a beam. Compared with the prior art, the invention adopts the design concepts of polar coordinates and modularization and enables the connection sizes of lathes, bases, and the like as well as Y-direction and Z-direction feeding systems of a milling gear and a hobbing and grinding gear to have interchangeability, thereby decreasing the manufacture cost, lowering the assembly difficulty and improving the machining precision and the machining efficiency of large-module large-diameter gears. The invention integrates the machining characteristics for roughly and finely machining a milling gear, precisely spreading into a hobbing gear and molding a grinding gear with respective optimal process velocities and reasonably arranges a milling, hobbing and grinding gear headstock transmission chain capable of satisfying the requirements for molding the milling gear, spreading into the hobbing gear and molding the grinding gear.

The present invention provides an adjustable angle drive for a rotary power tool such as a drill. The adjustable angle drive includes input and output shafts journalled for rotation in input and output housings. The input and output shafts are rotatably coupled through gearing and are adjustable among different angular positions.

The invention relates to a three-dimensional elliptical vibration cutting device, belonging to the field of cutting and ultra-precision cutting machining of materials which are difficult to machine. A diamond cutter is guided through flexible hinge mechanisms respectively along an X direction, a Y direction and a Z direction, and further, is driven by three piezoelectric stacks respectively alongthe X direction, the Y direction and the Z direction; the piezoelectric stacks of the X direction and the Z direction are preloaded by preloading screw bolts along respective axial direction; the piezoelectric stack of the Y direction is preloaded through a screw bolt screwing wedge; the preloading processes of the three directions are mutually independent; through regulating and matching the initial phase position and the amplitude of a driving signal for each of the three piezoelectric stacks, the projections of the cutter location point movements of the diamond cutter in an X-Y plane and aY-Z plane are elliptical motions, and the projection of the cutter location point movements of the diamond cutter in an X-Z plane is reciprocating elliptical motion or linear motion. The three-dimensional elliptical vibration cutting device has a novel and simple structure, is easy to implement, and is beneficial to obtaining the best cutting machinability of the diamond cutter.

The invention provides a large-scale numerical control gear machining machine tool which has six numerical control coordinate axes, namely X, Y, Z, A, C1 and C2 and adopts a two plus four layout manner. A workpiece has two freedom motion, namely linear motion along the X axis and rotational motion around the C1 axis; and a tool has four freedom motion, namely linear motion along the X axis and the Z axis and rotational motion around the A axis and the C2 axis. The large-scale numerical control gear machining machine tool adopts a six-axis (X, Y, Z, A, CI and C2 axis) five-linkage (X, Y, Z, A and C2 axis linkage) structure; the five numerical control coordinate axes, namely the X, Y, Z, A and C2 axes carry out interpolation motion; and the indexing movement of the workpiece is controlled by the C1 axis to process all tooth surfaces. The rotational axis of the workpiece, namely the C1 axis only finishes the indexing movement and does not participate in the interpolation motion formed bythe tooth surfaces so as to improve the processing precision and the processing efficiency of a large-scale gear. The large-scale numerical control gear machining machine tool can be constructed intoa gear miller or a gear grinder, thereby realizing the curved surface machining of a cylindrical gear, a bevel gear, an impeller and others with the indexing features.

The invention relates to a three-dimensional elliptic motion generating method and a three-dimensional elliptic motion generating device for a diamond cutter, which belong to the field of ultraprecise cutting and cutting of materials difficult to machine. The diamond cutter is directly driven by three piezoelectric stacks which are arranged vertically, the three piezoelectric stacks are pre-tightened by a pre-tightening bolt at the same time, and the pre-tightening forces of the three piezoelectric stacks are finely adjusted by three wedge mechanisms respectively; by actively controlling the initial phase of a three piezoelectric stack driving signal, the projections of the motion of the diamond cutter on an X-Y plane and a Y-Z plane are elliptic motions, and the projection of the motion of the diamond cutter on an X-Z plane is a reciprocating linear motion; and by regulating the parameters such as frequency and amplitude of the three piezoelectric stack driving signal, the automatic control over the three-dimensional elliptic motion track parameter of the cutter is realized. The method and the device are very simple, easy to implement and favorable for obtaining the optimal cutting machinability of the diamond cutter.

A method is provided for forming grooves in a polishing pad useful for planarizing a substrate in a chemical mechanical planarization process. The method maintains average velocity as a function of bit diameter to enable groove formation using a rotating bit, whereby grooves can be formed at a higher rate while maintaining high groove quality and low defectivity.

A vertical turning-milling complex machining center comprises a horizontally-arranged bed body (6) and a vertically-arranged column (7). The bed body (6) is provided with an X-axis lateral supporting linear track (2) and an X-axis guide screw (5). The bed body (6) is also provided with a uniaxial rotating table (1) which can reciprocate and is driven directly by a first external rotor torque motor. The column (7) is vertically provided with a Z-axis lateral supporting linear track (10), a Z-axis guide screw (9) and a crossbeam (11) that reciprocates up and down. The crossbeam (11) is provided with a transverse Y-axis linear track (13), a Y-axis guide screw (12) and a single-pendulum milling head seat frame that can reciprocate along the Y-axis guide screw (12). The single-pendulum milling head is driven directly by a second external rotor torque motor. The vertical turning-milling complex machining center uses direct-drive technology applied to a B-axis and a C-axis, the motor torque is greatly increased and functional parts can stably operate, therefore the integral rigidity and stability of the machining center are improved.

A pocket door angle drill having a right angle driver with a truly telescopic handle portion that may be extended to reach into confined spaces. The right angle driver has a casing and an internal gear assembly for translating rotary motion from a horizontal drive shaft to a vertical drive shaft. The drill further includes a telescopically extendable primary drive shaft portion that may be operatively connected to a power rotary device, and, optionally, an extension pole having an extension drive shaft for providing access to remote confined spaces.

The present invention is directed to an insert, a slotting cutter assembly and a method for machining a plurality of slots in a metallic alloy part. The insert may comprise a cutting edge, at least one primary radius, at least two secondary radii and a clearance angle. The cutting edge may form a narrow outer end at a tip of the insert and a larger width region at a distance inward from the narrow outer end. The clearance angle may extend rearward from the cutting edge. The slotting cutter assembly may comprise a plurality of inserts and a cutter body. The cutter body may comprise a plurality of retaining slots and a plurality of support portions. The retaining slot may be configured to receive the insert. The support portion may provide support for the insert.

The invention relates to a method for operating a handheld electric power tool, having an electric motor that is drivable at a rated torque as the maximum allowable motor torque by the application of a maximum allowable motor current. The method includes the steps of manually furnishing a specification of a maximum torque, in which the maximum torque is within a setting range between a minimum set torque and the rated torque, operating the electric motor by applying a motor voltage which corresponds to an rpm desired by the user, and limiting the motor current to a current value that depends on the furnished specification of the maximum torque.

The invention also related to a drive unit for an electric power tool, which includes an electric motor drivable at a rated torque as a maximum allowable motor torque by application of a maximum allowable motor current. A setting element manually furnishes a specification of a maximum torque, the maximum torque being within a range between zero and the rated torque. A triggering unit operates the electric motor by applying a motor voltage that corresponds to an rpm desired by the user. A motor controller limits the motor current to a current value that depends on the furnished specification of the maximum torque.

An apparatus for making microlens molds and microlens array molds is described which utilizes a forming element having a rotating half radius diamond cutting member. A substrate is alignably arranged with the diamond cutting member so that the cutting member can mill a mold cavity in the substrate. The apparatus can be used to make high sag lens molds with high accuracy and a nearly 100% fill factor.

The double pendulum milling head driven by the AC permanent syntactic rotor torque motor having a cross hollow shaft, whose both ends fixed on the rotor of the horizontal torque motor at both ends of the A shaft. Acting as an integral, they are fixed on the rotor of the vertical torque motor of C shaft. In this way, vertical motor driving the milling head to rotate around C shaft, and A shaft horizontal motor driving the pendulum of milling head around A shaft. It complete the complex machining of the working piece through compound motion in two directions matching the high speed revolution of the shaft itself. It is compact in structure, simple of drive, good in rigidity, smaller in mechanical components quantity, higher reaction sensitivity, free from wear and reverse gap, being able to machining for a five-face body with high precision.

The invention relates to an end effector for forming holes for aircraft assembly, wherein the end effector is combined with an industrial mechanical arm. The end effector comprises a spindle-feeding module, a dual-eccentric-disk posture adjusting module, a scrap sucking and pressing module, a normal detection module and a visual detection module. The spindle-feeding module comprises a spindle motor, a feeding motor, a ball screw, a drill and the like and achieves the hole drilling function. The dual-eccentric-disk posture adjusting module comprises a posture adjusting motor, a large eccentric disk, a small eccentric disk and the like and achieves the drill posture adjusting function. The scrap sucking and pressing module comprises a pressing air cylinder, a pressing head and the like and achieves the workpiece pressing function and the drilling and cutting scrap sucking function. The normal detection module comprises a laser sensor and the like and achieves the function of calculating the normal direction of a hole forming point. The visual detection module comprises an industrial camera and the like and achieves the function of displaying the hole forming effect in real time. After the end effector is combined with the industrial mechanical arm, the error of perpendicularity of a hole in the hole forming process can be smaller than 0.5 degree, and according to the hole forming efficiency, five to six holes can be formed per minute. Not only is the hole forming quality for aircraft assembly improved, but also labor force is greatly reduced.

An electric power tool capable of selecting an operation mode with good operability without risk of erroneous operation even though there are many operation modes. The gear box (12) in the housing respectively has: the clutch switching groove (65) engaged with the operation protrusion (62) of the clutch switching handle (57); ) of the notch (81) of the guide body (82) of the stepped pin (83) engaged; the vibration switching groove (101) engaged with the operation protrusion (98) of the vibration switching handle (93), and the The integrated rotary position of the switching plate (31) can change the combined switching box (64) of the sliding position of each switching member, and use the switching button (30) to rotate and operate the switching plate (31) and the switching box (64) from the outside of the housing, so that Only the operation of one switch button (30) can select all action modes of drilling mode, impact mode, vibration drilling mode and clutch mode.

The invention discloses a vertical milling lathe complex machining center which comprises a horizontally arranged lathe body (6) and a vertically arranged upright post (7). The lathe body (6) is provided with an X-axis lateral supporting line track (2) and an X-axis guide screw (5) and configured with a uniaxial rotating table (1) which reciprocates and is driven by a first outer rotor torque motor in a direct driven mode. The upright post (7) is vertically provided with a Z-axis lateral supporting line track (10) and a Z-axis guide screw (9) and configured with a crossbeam which reciprocates up and down. The crossbeam (11) is provided with a transverse Y-axis line track (13) and a Y-axis guide screw (12) and configured with a single pendulum milling head seat frame which can reciprocate along the Y-axis guide screw (12); and a single pendulum milling head is driven by a second outer rotor torque motor at the rear part in the direct driven mode. Since a direct driven technology is applied to a B axis and a C axis, the motor torque is greatly increased and a functional part can stably operate; therefore the integral rigidity and the stability of a lathe are improved.

The invention provides an ultraprecise aerostatic electric spindle system which relates to an electric spindle system. The invention solves the problems that in the spindle system of current ultraprecise processing devices, rotation accuracy is poor; direct drive can not be realized and transmission effects of the power of an electric motor and a spindle are unfavorable. A motor shaft (14) on a DC brushless drive motor (15) is fixedly connected with the upper end face of an upper thrust plate (3); the spindle (4) and a spindle sleeve (5) are positioned between the upper thrust plate (3) and a lower thrust plate (6); the spindle sleeve (5) is sleeved on the spindle (4); the lower end face of the upper thrust plate (3) is fixedly connected with the upper end face of the spindle (4); the lower end face of the spindle (4) is fixedly connected with the upper end face of the lower thrust plate (6). The motor shaft (14) and the spindle (4) are coaxial; the spindle sleeve (5) is opened with a plurality of radial restriction orifices (8-1) and a plurality of axial restriction orifices (8-2). In the invention, an aerostatic bearing is used as an axial support and a radial support, which guarantees the rotation accuracy of the spindle; the aerostatic bearing has the effect for homogenizing the geometric accuracy of the spindle and the spindle sleeve so that shafting has extremely high rotation accuracy.

The invention discloses a numerical-control multi-spindle gantry drilling and milling machine tool which comprises a gantry. A tool body which enables a workpiece to move in the X direction and the Y direction of the horizontal plane is arranged below the gantry. A clamping device used for clamping the workpiece is arranged on the tool body. A gang drill is arranged on a gantry frame and located on the top of the tool body, wherein the gantry frame and the tool body are relatively and fixedly installed. The gang drill comprises a plurality of drilling and milling devices. The drilling and milling devices are driven by two-stage power devices to move up and down in the vertical direction, two-stage adjustment of the perpendicular distance between the drilling and milling devices and the workpiece is achieved, and the drilling and milling devices are driven by the same driving device to rotate. According to the numerical-control multi-spindle gantry drilling and milling machine tool, working efficiency of mass drilling and milling is greatly improved, and the gap between China and advanced countries is narrowed.

A power tool including a motor for rotatably driving a tool bit at an attained rotational speed, a source for supplying an electric current to the motor, a sensor for measuring the current, and a control device. The control component fulfils the task of detecting a variation of the slope of the current in the course of time, and generates a control signal. The rotational speed of the tool is reduced in response to the control signal. The power tool automatically detects whether the work piece operated by the tool bit reaches a predetermined position by electronic control means. It may make sure that the screw is driven into a piece of wood and does not go beyond the predetermined position once it detects that the work piece reaches the position and carries out a changing action.

The present invention relates to machining fixture, and is especially one kind of milling head for holding milling cutter in numerically controlled machine tool. The rectangular bevel gear milling head includes one driving mechanism and one steering mechanism. The driving mechanism includes one milling head base fixed onto the milling machine and one connecting shaft set inside the base and connected to the milling machine spindle. The steering mechanism includes one milling head casing, two bevel gears to constitute one rectangular gear train, and one milling head spindle. The milling head has capacity of altering the milling cutter rotation direction, capacity of machining inner surface of hole or end parallel to the milling machine spindle, high production efficiency and high machining precision.

The invention provides a steel tube drilling device provided with multiple drill heads. The device comprises a workbench, a driving mechanism, a drilling mechanism and a clamping mechanism, wherein the driving mechanism comprises a first gear, a rack and a drive shaft; the drilling mechanism comprises multiple drilling apparatuses, and each drilling apparatus comprises a stand column mounted on the workbench, a cross bar mounted on the stand column, a connecting plate mounted on the stand column and at least two drilling units; each drilling unit comprises a slider, a first connecting rod, a second gear and a drill rod; the connecting plates are hinged with the sliders through second connecting rods with equal lengths; the clamping mechanism comprises a mounting plate, a first drive device and clamping devices symmetrically arranged at two ends of the mounting plate; each clamping device comprises a bracket, a first rotating shaft and a clamping unit, the first rotating shaft is horizontally and rotationally mounted on the bracket, and the clamping unit is mounted on the first rotating shaft; the first drive device is in transmission connection with the first rotating shafts through transmission mechanisms. The device can drill multiple holes in the same steel tube, and the product quality is high.

According to an aspect of the present invention, there is provided a rotary striking tool, including: a motor; an impact unit having a driving part being driven by the motor and an output part; a tip-tool side output shaft that is coupled to the output part; an impact detection unit that detects an impact generated at the impact unit; and a control unit programmed to: control the impact unit to perform a confirmation striking when the impact detected by the impact detection unit reaches a prescribed value, detect a rotation angle of the output shaft at the confirmation striking, determine whether a fastening operation is completed when the detected rotation angle is equal to or smaller than a predetermined angle, and continue the fastening operation when the detected rotation angle is larger than the predetermined angle.

The invention discloses a drilling machine with a variable-angle drill bit and relates to a drilling device. The drilling machine with the variable-angle drill bit comprises a rack, a rotary seat, a drive portion and a drilling portion. The rotary seat is rotationally connected to the rack. The drilling portion comprises a transmission shaft, a sleeve, a feeding block and the drill bit. The sleeve is rotationally connected to the rack. An internal thread is arranged in the sleeve. An external thread is arranged on the feeding block. The feeding block is arranged in the sleeve and matched with the sleeve in a threaded manner. One end of the feeding block is provided with an internal spline. The drill bit is fixedly connected to the other end of the feeding block. The angle of the drill bit can be changed by rotating the sleeve. One end of the transmission shaft is connected with the spline in sliding fit with the feeding block. The transmission shaft is connected with the rotary seat through a universal joint so that variable-angle power transmission can be achieved. A fastening screw is arranged between the sleeve and the rack so that the sleeve can be fastened to the rack.

An object of the invention is to provide a spindle apparatus which facilitates assembling and removing operations at the time of maintenance and which is low cost.

In the invention, the diameter becomes smaller in the order of an inner peripheral diameter of an outer cylinder (3), an inside diameter of a stator (4), and an outside diameter of a bearing sleeve (11); a sub-assembly (2) made up of a front housing (8), a rotating shaft (6), and the bearing sleeve (11) is withdrawable from the outer cylinder (3); and the diameter of a rotating part in an arbitrary section located rearwardly of the bearing sleeve (11) is made smaller than a minimum diameter of a non-rotating part between a rear end of the bearing sleeve (11) and the section.

A hand tool apparatus uses a cutting tool with a first width and a tool axis to machine a hole in an object. The hole has a second width at least as large as the first width of the cutting tool. The tool axis passes through a predetermined point on a surface of the object. The apparatus includes an actuating assembly including a housing. The housing contains an axial feed mechanism configured for moving the cutting tool in an axial direction, a spindle motor configured for rotating the cutting tool about the tool axis, and a radial offset mechanism. The radial offset mechanism is configured for moving the axial feed mechanism in a radial direction such that the tool axis is offset from a principal axis. A motor is configured for rotating said axial feed mechanism and the cutting tool about the principal axis.

The invention discloses an intelligent detection and active inhibition device for fluttering of a high-speed milling electric spindle. According to the device, in the milling process, a vibration signal of a spindle tool handle is collected in real time through built-in acceleration sensors, built-in displacement sensors and an external data collection and analysis meter; the acceleration vibration signal is analyzed in real time through a modern signal processing method, so that intelligent detection of milling fluttering is achieved; and if fluttering occurs, the vibration information collected by the displacement sensors is transmitted into an FPGA controller, the controller carries out adaptive optimization, a driving signal is output, a piezoelectric actuator is driven by a power amplifier to operate, mutual offset of secondary vibration and machining vibration of the piezoelectric actuator is achieved, and intelligent and active inhibition of the fluttering is achieved. Visual displaying and monitoring of the state information, comprising vibration, displacement, temperature and the like, of the whole system can be achieved on a computer in real time in the machining process. The intelligent detection and active inhibition device for the fluttering of the high-speed milling electric spindle can effectively improve milling stability, milling quality and milling efficiency.

The invention discloses an automatic cooling and steel cutting device, which includes a casing, wherein the right end of the casing is provided with a conveying cavity, a connecting cavity and a driving cavity, the conveying cavity is provided with a conveying mechanism for pushing steel for cutting and the opening is upward, the connecting cavity is provided with a lifting mechanism for lifting the cutting part, the lower side of the connecting cavity is provided with a cutting mechanism for cutting steel. The device can cut off the steel evenly by itself when it is in use. During the cutting process, it will automatically spray water to cool down the steel and the cutter, so as to reduce the damage. After each section is cut, the cutter will automatically lift up to prepare the next section of steel cutting of wood.

The invention discloses a programmable intelligent electric spindle. The programmable intelligent electric spindle comprises a front bearing pedestal, a rear bearing pedestal, a spindle body, a motor rotor, a motor stator, a cooling water jacket, an actuation bearing, an annular pressing block, a tool handle, a controller, a cooling liquid input pipeline, a cooling liquid outlet pipeline and a shell of a hollow structure. An annular cavity is formed between the motor stator and the shell, and the cooling water jacket is arranged in the cavity; a plurality of first piezoelectric actuators are evenly arranged between the annular pressing block and the front bearing pedestal in a divided manner in the circumferential direction, and a plurality of grooves are arranged on the inner side of the rear bearing pedestal in the circumferential direction; second piezoelectric actuators are embedded in the grooves; an electromagnetic valve is arranged on the cooling liquid input pipeline; and the output end of the controller is connected with the control end of the electromagnetic valve, and the control ends of the first piezoelectric actuators and the control ends of the second piezoelectric actuators are connected. Vibration and shaft end deformation of the spindle body can be reduced, temperature rising of the spindle body is regulated and controlled, the structure is simple, and the requirements of parts for machining quality diversity can be met.

A machine tool assembly includes a high speed rotating spindle for forming extremely precise surface contours on a work piece. The spindle is supported on a spherical air bearing about its center of gravity. The spindle can be rotated through an air turbine drive system incorporated into the spherical air bearing to eliminate any undesirable moments about an axis perpendicular to the long spindle axis. The spindle is adjustable in pitch and yaw directions through the influence of X-Y actuators. The X-Y actuation system is preferably electromagnetic and provides a non-contact method of displacing the spindle shaft in a controlled manner at any speed.