736results about "Auxillary equipment" patented technology

The invention relates to the technical field of machining, and discloses a lathe tool wear self-inspection alarm system which comprises a multi-source sensing module, an intelligent analysis module, a dynamic response module, an interactive display module and a self-adaptive energy supply module. The multi-source sensing module synchronously acquires the surface abrasion loss, the vibration spectrum and the acoustic emission signal of the cutter through an optical sensor, a capacitive sensor and an MEMS triaxial accelerometer, and outputs the surface abrasion loss, the vibration spectrum and the acoustic emission signal to the intelligent analysis module; and the intelligent analysis module performs fusion analysis on the multi-source data by adopting a mixed feature extraction and double-model decision mechanism. High-precision monitoring and dynamic evaluation of lathe tool wear are realized through optical, vibration and acoustic emission sensors of the multi-source sensing module in combination with mixed feature extraction and a double-model decision mechanism of the intelligent analysis module. By means of the mode of combining multi-dimensional monitoring and intelligent analysis, machining defects and equipment failure risks caused by tool abrasion can be reduced.

The invention relates to the technical field of numerical control lathe machining, in particular to a numerical control lathe cutting parameter optimization method and system. The method comprises the following steps: receiving a processing task for batch workpieces, dividing processing batches in the processing task, and determining a detection processing step; in the detection machining step, cutting process signals and machine tool machining parameters of a machine tool are collected and detected in real time; based on the cutting process signals and the corresponding machine tool machining parameters, an expected stable signal interval is dynamically established, and transient impact events are recognized and quantified; performing statistics and normalization processing on the transient impact events to generate risk assessment information; sharing risk assessment information with other machine tools in a machining batch range; and according to the risk assessment information, cutting parameters of the subsequent machining steps are adjusted in advance, and after the pre-adjustment is completed, machining of the batch of workpieces is executed. The problem that production efficiency and stability are reduced due to the fact that information of an existing numerical control lathe is not shared in a multi-machine-tool cooperative machining scene is solved.

The application discloses a kind of through tool turret-lathe tool ultra-low temperature medium internal spray type cooling numerical control lathe, including inclined bed lathe host, ultra-low temperature medium heat insulation transmission control system, ultra-low temperature medium internal spray type tool turret and ultra-low temperature medium internal spray type lathe tool.The ultra-low temperature medium internal spray type tool turret and ultra-low temperature medium internal spray type lathe tool realize that ultra-low temperature medium is transported to the cooling of tool tip by the inner cavity channel of tool turret-tool, solve the integration problem of liquid nitrogen internal spray type cooling function and conventional lathe structure;Ultra-low temperature medium internal spray type lathe tool tail end uses telescopic transmission pipe, realizes the directional supply of ultra-low temperature medium to working lathe tool when automatic tool changing;Ultra-low temperature medium transmission pipeline passes through from the spindle center of ultra-low temperature medium internal spray type tool turret, and adopts vacuum heat insulation structure, without affecting original structure, ensure the heat insulation transmission of medium;Ultra-low temperature medium control system and the integration of numerical control machine tool, realize the stable controllable of pressure and flow in ultra-low temperature medium transmission process.

The invention provides an environment temperature compensation method and system in the turning process and electronic equipment, and relates to the technical field of turning machining.The method comprises the steps that temperature data of a machine tool at a preset position are obtained and serve as environment temperature data; according to the environment temperature data and geometric structure parameters of machining equipment of the machine tool, the current thermal deformation amount of a machine tool structural part corresponding to the machined workpiece and the current thermal deformation amount of the machined workpiece are obtained; through a long-short-term memory fusion prediction model, prediction is carried out in combination with the historical thermal deformation of the machined workpiece, and future thermal deformation of the machine tool structural part and the machined workpiece in a future preset time period is obtained; and further generating a cutter servo shaft compensation amount, a main shaft hydraulic pre-tightening force compensation amount and a cutting fluid temperature control compensation amount, generating a compensation program according to the compensation amounts, and inserting the compensation program into a machining program of a machined workpiece to complete real-time compensation. According to the invention, through real-time monitoring, dynamic prediction and multi-dimensional compensation, the precision and effect of environment temperature compensation are significantly improved.

The invention discloses a magneto-rheological self-adaptive locking clamp for turning and a machining method of the magneto-rheological self-adaptive locking clamp, and belongs to the technical field of precision workpiece machining equipment. Comprising a flexible contact shell making contact with a workpiece, a locking unit arranged at the outer end of the flexible contact shell and an outer shell arranged outside the locking unit. The locking unit comprises an axial locking assembly and a radial pushing assembly, and the axial locking assembly is a self-adaptive locking assembly with an integrated magnetic circuit; the radial pushing assembly is a rigid pushing assembly. By means of the clamp, high-precision, lossless and self-adaptive locking of workpieces is achieved, and clamping deformation of thin-wall and special-shaped workpieces is effectively restrained. Through a composite mechanism of magneto-rheological locking and mechanical rigid pushing, the dynamic stability of the machining process is remarkably enhanced, meanwhile, it is ensured that the locking force is quick in response, low in energy consumption and stable in long-term work, and the machining quality and efficiency and the reliability of the clamp are improved.

The invention relates to the field of lathes, in particular to a wind power bolt slender shaft turning special machine which comprises a machine body composed of a shell and a base. A main shaft unit, a sliding table unit and a tool rest unit are arranged on the base; the self-avoiding positioning unit is arranged on the main shaft unit, the self-avoiding positioning unit comprises a telescopic positioning assembly and a locking assembly used for locking the positioning assembly, and the positioning assembly is used for conducting double positioning of axial jacking and radial clamping on the wind power bolt; the positioning assembly can contract in the machining process so as to avoid a tool feeding space. The retractable positioning assembly is matched with the locking assembly for linkage unlocking, when the tool rest unit moves to a clamping area, unlocking can be automatically triggered, the claw petals are retracted, the machining space of a tool is completely avoided, and therefore integrated continuous machining of a wind power bolt shaft body and threads at the two ends is achieved. And the procedures of end waste cutting and secondary clamping are thoroughly eliminated.

The invention relates to the technical field of turning equipment, and discloses turning equipment for a precision bearing assembly, which comprises two symmetrically arranged chucks, a rotation driving assembly for driving the chucks to rotate, a driving base for driving the chucks to translate, and a cutting mechanism for cutting a workpiece, a plurality of first sliding grooves are formed in the chuck in the radial direction, the first sliding grooves are formed in the chuck in a penetrating mode, first sliding bases are slidably installed in the first sliding grooves, and sliding type fixing rods are arranged in the first sliding bases in a penetrating mode; through the arrangement of composite positioning of the axial adjustable sliding type fixing rod and the two-way double chucks, adaptive clamping of long cylindrical blanks with different axial lengths is achieved, and the fixing mode that inner hole multi-point supporting and end face pressing are combined is adopted; the problems of blank local deformation, rotation eccentricity and low coaxiality caused by a traditional clamping mode are effectively solved.

The invention relates to the technical field of eccentric shaft machining lathes, in particular to an eccentric shaft machining lathe with an eccentric center structure, which comprises a lathe main body, a fixed frame is fixedly connected to one side of the lathe main body, a movable frame is arranged on the fixed frame in a sliding fit manner, and a rotating seat is rotatably connected to the movable frame; a transmission mechanism is rotationally connected to the rotating seat, a stabilizing ring frame is rotationally connected to the rotating seat, a follow-up rotating ring is rotationally connected to the stabilizing ring frame, an eccentric block center mechanism is fixedly connected to the follow-up rotating ring, and an eccentric shaft is clamped and fixed to a three-jaw chuck on the lathe body; the eccentric block center mechanism is arranged on the follow-up rotating ring, the two angle-adjustable center plates abut against the fan-shaped eccentric block on the eccentric shaft, when the eccentric shaft rotates for machining, the fan-shaped eccentric block on the eccentric shaft is more stably and accurately supported, vibration, unbalance and deformation are reduced, and the machining precision and quality are improved.

A debris collection assembly includes a jig and an adapter insert. The jig includes a front wall and a back wall opposite the front wall. The front wall defines an aperture therethrough. The back wall defines an adapter opening that aligns with the aperture. The jig includes a vacuum port and defines an interior cavity that fluidly connects the aperture, the adapter opening, and the vacuum port. The adapter insert is removably loaded through the adapter opening into the interior cavity of the jig. The adapter insert defines an orifice sized to receive a drill bit and allow the drill bit to extend through the aperture in the front wall to drill into a work piece. Negative pressure at the vacuum port draws airflow through the interior cavity and captures debris generated from drilling.

The invention discloses rotary clamping equipment for a medium-caliber seamless steel pipe for fluid conveying and a using method, and relates to the technical field of steel pipe machining. The rotary clamping equipment for the seamless steel pipe for conveying the medium-caliber fluid comprises a rack, a steel pipe, a machine box and a supporting frame, and further comprises a chuck assembly which is coaxially and rotatably installed on the machine box and the supporting frame and used for fixing the two ends of the steel pipe. The double-row cylindrical self-aligning bearing is used for supporting the main shaft sleeve, passive self-adaptive self-aligning of the main shaft sleeve is achieved, a chuck assembly at the driving end can follow the instantaneous rotation axis of actual bending change of a steel pipe in real time, and a workpiece is not forced to conform to the theoretical axis of equipment; the problems of spiral line contact between the clamping jaw and the surface of the steel pipe, local stress concentration and periodic pulsation attenuation of clamping force caused by forced centering under traditional rigid clamping are solved, it is guaranteed from the source that the clamping jaw and the outer edge of the steel pipe always keep stable and uniform surface contact in the initial clamping stage and the rotating process, and axial movement is eliminated.

The invention discloses a high-precision numerical control lathe and a dynamic compensation control method thereof. The high-precision numerical control lathe comprises a lathe body, a spindle box is installed at one end of the upper side of the lathe body, a spindle is rotationally installed in the spindle box, a chuck is installed at one end of the spindle, a linkage mechanism is installed on the lathe body and located on one side of the chuck, a tool rest is installed on the linkage mechanism, and a tool is installed on the tool rest. A temperature detector is installed in the spindle box, at least two temperature sensors are installed on the cutter, tensile strain gauges are further installed on the top and the side face of the cutter respectively, an X-axis encoder is installed at the end of a driving lead screw of the X-axis sliding seat, and a Y-axis encoder is installed at the end of a driving lead screw of the Y-axis sliding seat. Real-time sensing, intelligent prediction and closed-loop compensation of dynamic disturbance such as thermal deformation, tool abrasion and vibration are achieved, the machining precision, stability and self-adaptive capacity of the numerical control lathe under the complex working condition are remarkably improved, and the numerical control lathe is suitable for precise and efficient turning machining of high-end rotary parts.

The furnace roller rough machining turning equipment comprises a rack, a spindle box is arranged at one end of the top of the rack, a tailstock is arranged at the other end of the top of the rack, and three-jaw chucks used for fixing a furnace roller are arranged on the opposite sides of the spindle box and the tailstock correspondingly. A turning mechanism is further arranged at the position, located between the spindle box and the tailstock, of the top of the rack, the furnace roller turning machine further comprises a movable base, a mounting plate, a furnace roller supporting mechanism and a furnace roller axial limiting mechanism, the mounting plate is arranged above the movable base, and position adjusting structures are arranged between the mounting plate and the movable base and between the movable base and the rack. The furnace roller supporting mechanism is mounted at the top of the mounting plate and used for supporting and fixing the furnace roller, the furnace roller supporting requirements of various specifications can be met, the supporting device does not need to be frequently replaced, the universality and applicability of equipment are improved, and the equipment cost and the use cost are reduced.

The invention discloses a numerical control vertical lathe with a detachable clamping mechanism, and relates to the technical field of machining, the numerical control vertical lathe comprises a turning frame, a first electric guide rail, a second electric guide rail and a machining table, the first electric guide rail and the second electric guide rail are used for controlling the turning frame to move, and the machining table is used for bearing a workpiece; the lathe turntable is driven after being decelerated by a motor through a speed reducer, a workpiece chuck is clamped to the top of the lathe turntable and used for off-line centering adjustment of workpieces, worm calipers are arranged at the top of the workpiece chuck and used for clamping the workpieces, and an air pressure locking device and a magnetic floating positioning device are arranged on the lathe turntable. The pneumatic locking device is used for locking the lathe turntable and the workpiece chuck, and the magnetic floating positioning device is used for positioning and guiding the lathe turntable and the workpiece chuck. Workpiece centering operation which consumes long time is completed off line, the machine tool shutdown clamping time is greatly shortened, and the equipment utilization rate is increased.

The invention discloses a turning device for steel pipe pole production, and particularly relates to the technical field of workpiece turning, the turning device comprises a turning rack and a steel pipe pole main body, and a turning tool bit frame used for turning the end face of the steel pipe pole main body is mounted in the turning rack; a stable cutting assembly used for rigid supporting and heat conduction with the interior of the steel pipe pole body is arranged in the turning rack. The stable cutting assembly comprises a plurality of stable frames installed in the steel pipe pole body, and the top of each stable frame is fixedly connected with a dispersed support. The stable frames and the steel pipe pole body are in multi-point contact design, the scattered supports can be driven to synchronously support the steel pipe pole body in a multi-point mode, it is effectively avoided that the stable frames directly cover the interior of the steel pipe pole body in a large area, large-area shielding on a heat dissipation face is avoided, and discharging can be smoothly conducted through the discharging-in channels in the tops of the scattered supports; and the problem of local overheating caused by turning heat accumulation is effectively avoided, and finally the completeness of turning machining of the steel pipe pole body is guaranteed.

Provided is technology which enables suitable control of a chuck holding force. In this machine tool comprising a main shaft provided with a chuck for holding a workpiece, when an open / close mechanism has performed a closing operation on the chuck such that the chuck enters a closed state from an open state, a holding force of the chuck on the workpiece in the closed state is acquired on the basis of the magnitude of a difference between a first time taken from when a control unit emits a control signal for the closing operation to the open / close mechanism to when a first sensor detects that the chuck is no longer in the open state, and a second time taken from when the control unit emits a control signal in an open / close mechanism to when a second sensor detects that the chuck has entered the closed state.

The lathe machining device comprises a tool rest, four lifting plates distributed in a rectangular mode are arranged at the upper end of the tool rest, lead screws are inserted into the upper ends of the lifting plates, the lead screws are in threaded connection with the lifting plates, the lower ends of the lead screws penetrate through the lifting plates and are rotationally connected with the upper end of the tool rest, and the lower ends of the lead screws are fixedly connected with the tool rest. A plurality of pressing rods are fixedly connected to the lower end of the lifting plate, a circle of square containing groove is formed in the outer side wall of the tool rest, the lower ends of the pressing rods slidably penetrate through the tool rest and extend into the containing groove, four connecting grooves distributed in a rectangular mode are formed in the inner bottom of the containing groove, and supporting blocks are slidably connected to the inner side walls of the connecting grooves; the upper end of the supporting block penetrates through the connecting groove and extends into the storage groove. Through the arrangement of the supporting block, the pressing rod and other mechanisms, the turning tool can be rapidly installed and fixed, meanwhile, a user can conveniently adjust the height of the turning tool, and practicability and convenience are improved.

The utility model discloses a quick positioning device for a center hole of a shaft blank, relates to the technical field of center hole positioning, and aims to solve the problem that the center hole of the forged shaft blank is difficult to quickly and accurately position. The quick positioning device comprises a lathe bed, and a supporting mechanism for supporting the blank is arranged on the lathe bed. A driving device used for driving the blank to rotate is arranged on the supporting mechanism, a positioning mechanism is further connected to the lathe bed in a sliding mode, and a line drawing mechanism and a punching mechanism are arranged on the positioning mechanism.

According to the hydraulic auxiliary supporting device of the numerical control heavy horizontal lathe and the adjusting method of the hydraulic auxiliary supporting device, a cooperative work system is formed by arranging a hydraulic supporting assembly and a cross-three-guide-rail balance structure of a supporting plate assembly, and the cross-three-guide-rail balance structure of the supporting plate assembly is used for supporting the supporting plate assembly by increasing the supporting area, lengthening a force arm and optimizing a positioning and guiding structure; the bearing capacity, the rigidity and the movement precision of the machine tool are improved from the mechanical structure level; according to the hydraulic supporting assembly, through the combined design of hydraulic proportional adjustment and hydraulic supporting disc spring pre-tightening, self-adaptive adjustment of loads and gaps is achieved, cutting vibration is effectively absorbed, overturning moment is offset, and the defect of a mechanical structure in the dynamic load adaptation aspect is overcome; when the supporting plate assembly and the hydraulic supporting assembly work cooperatively, the supporting plate assembly provides a stable stress foundation for the hydraulic supporting assembly, the hydraulic supporting assembly conducts precise compensation for dynamic load changes, the double advantages of static rigidity guarantee and dynamic load adaptation are formed, the overall performance of the machine tool is remarkably improved, and the requirements for high-precision and high-efficiency machining of heavy and extra-heavy workpieces are met.

The invention is applicable to the technical field of thread cutting, and provides a cutting system for processing a reverse-thread nut stud, which comprises a conveying frame, two groups of high-temperature-resistant conveying belts which are arranged in parallel are arranged between the two supporting frames from top to bottom in a transmission manner; a cutting frame is fixedly mounted on the side surface of the U-shaped seat; the outer wall of the rotating shaft is provided with a reciprocating spiral groove matched with a left-hand thread on the circumferential side face of the left-hand thread nut column. A sliding seat matched with the reciprocating spiral groove is arranged on the inner bottom face of the U-shaped table in a sliding mode. A cutting piece in sliding fit with the sliding rail is rotationally arranged on the side face of the sliding base. According to the system, the two sets of high-temperature-resistant conveying belts are used in cooperation with the clamping pieces and the stopping pieces, charging, discharging and tool setting of a to-be-cut nut column body are achieved, the automation degree is high, meanwhile, the clamping pieces and the stopping pieces complete fixed clamping of the to-be-cut nut column body, the working efficiency is improved, and the working efficiency is improved. The working efficiency is improved, meanwhile, the turning stability is improved, and then the turning quality is improved.

The invention belongs to the technical field of metal cutting machine tools, and discloses an intelligent lathe which is characterized in that a touch main screen is mounted on the front side of a spindle box, and a touch auxiliary screen is mounted on the front side of a carriage box; the carriage box is installed on the front face of the lathe bed through a Z-direction ball screw. A spindle is installed on the two side walls of the spindle box through a front support and a rear support respectively, the front support is mainly composed of a bidirectional thrust angular contact ball bearing and two rows of cylindrical roller bearings with taper holes in the inner walls, and the taper holes are matched with the outer conical face of one end of the spindle. Nuts A are arranged on the outer sides of the two rows of cylindrical roller bearings; nuts B are arranged on the inner sides of the two-way thrust angular contact ball bearings; the rear support is a double-row cylindrical roller bearing; the carriage box is provided with a large carriage, and the large carriage is provided with a small carriage through an X-direction ball screw; the small carriage is mounted on the large carriage through an X-direction linear guide rail; and the large carriage is arranged on the lathe bed through a Z-direction linear guide rail. According to the invention, the manufacturing process is simplified, the cost is reduced, the noise of a machine tool is reduced, oil leakage is avoided, and the device is easy to repair and use and moderate in price.

The invention relates to the technical field of numerical control turning, in particular to numerical control turning equipment for a complex curved surface aluminum alloy workpiece, which comprises a rack, a driving box is arranged on one side of the top of the rack, a chuck is fixedly connected to the output end of the driving box, a plurality of clamping jaws are arranged on the chuck, and an aluminum alloy workpiece is clamped on the chuck and the clamping jaws. An adjusting module is installed on the sliding rail in a sliding mode, and a turning tool is arranged on the adjusting module. The pressure partitioning assembly is arranged on one side of the multiple clamping jaws; the auxiliary supporting assembly is installed on the sliding rail in a sliding mode; the control system comprises a pressure sensor, a displacement sensor, an acceleration sensor and a controller which are electrically connected with the pressure partitioning assembly and the auxiliary supporting assembly. Compared with the prior art, through the pressure partition control strategy that the pressure partition assembly is arranged to be matched with the control system, the machining precision and consistency of the thin-wall workpiece are remarkably improved, meanwhile, the surface of the workpiece is prevented from being damaged by clamping, and high-precision lossless clamping is achieved.

The invention belongs to the technical field of positioning tools, and particularly relates to a positioning tool for motor shaft machining. Comprising a base, a chuck is installed on the base, the base is in sliding connection with an electric sliding frame through an electromagnetic sliding rail, the electric sliding frame is fixedly connected with a top column, the base is in sliding connection with a sliding block, the sliding block is fixedly connected with an electric control push rod, an elastic block is fixedly connected to a telescopic part of the electric control push rod, and the elastic block is fixedly connected with a supporting plate. The telescopic part of the electric control push rod and the elastic block are used for actively and passively adjusting the height of the supporting plate correspondingly, and the supporting plate is used for supporting the motor shaft so as to resist the radial force borne by the motor shaft in the machining process and perpendicular to the axis of the motor shaft. The turning position of the motor shaft is supported through the supporting plate, so that the probability that the chuck is loosened and the motor shaft is deformed due to the fact that the motor shaft is pressed in the turning process is reduced, the turning stability of the motor shaft is guaranteed, and the machining quality of the motor shaft is improved.

The machine tool includes: a first spindle that includes a collet chuck that grips a workpiece; a first headstock that rotatably supports the first spindle; an air cylinder that generates a driving force for changing a state of the collet chuck between a gripping state for gripping the workpiece and a release state for releasing the grip of the workpiece; a non-rotary transmitting member that transmits the driving force received from the air cylinder; a rotary transmitting member that rotates together the first spindle and transmits to the collet chuck the driving force received from the non-rotary transmitting member; strain detection means that is attached to the non-rotary transmitting member and detects a strain of the non-rotary transmitting member produced when the driving force is transmitted from the air cylinder to the collet chuck, and a deriving unit that derives the gripping force of the collet chuck based on a detection result of the strain detection means.

Provided is a turning apparatus with MQL based on magnetic circulation and ultrasound-assisted infiltration, comprising a turning tool fixed with 2D ultrasonic auxiliary device; a magnetic circulation nozzle and magnetic circulation recycling nozzle arranged on both sides of turning tool; lubricant channels respectively provided inside magnetic circulation nozzle and magnetic circulation recycling nozzle; magnets arranged on peripheries of lubricant channels; polarities of ends of magnets on the two nozzles facing to turning tool are opposite; lubricant channel of magnetic circulation nozzle is connected to one end of first flexible pipe, and another end is connected to lubricant canister after passing through peristaltic pump; one end of second flexible pipe is connected to the peristaltic pump, and another end is connected to a filtering mechanism; one end of third flexible pipe is connected to the magnetic circulation recycling nozzle, and another end is connected to liquid inlet of filtering mechanism.

The invention relates to the technical field of butterfly nut producing and machining devices, and provides a butterfly nut machining device and method.The butterfly nut machining device comprises a mounting plate, a fixing base, a pressing piece, a positioning pressing plate and a side pressing assembly, and a positioning groove is formed in the fixing base and used for positioning a butterfly nut; the positioning pressing plate is locked on the fixing seat through the pressing piece, the positioning pressing plate is used for pressing the cylinder part of the butterfly nut, and a receding hole communicated with the through hole is formed in the positioning pressing plate in a penetrating mode; the side pressing assembly is arranged on the mounting plate and is used for pressing the side plate part of the butterfly nut; the side pressing assembly comprises a linear air cylinder, a lifting block and a pressing block, the linear air cylinder is arranged on the other side of the mounting plate, the lifting block is connected with a piston rod of the linear air cylinder, and the pressing block is integrally connected with the lifting block. The machining device has the effect of improving the machining stability of the butterfly nut.

The invention discloses an automatic positioning and turning device for the blank end face of an air cylinder seat, belongs to the technical field of turning machining, and aims to solve the problems that in long-term use, a clamp is prone to being comprehensively influenced by material fatigue and part abrasion, obvious positioning deviation occurs, and stable machining precision is difficult to maintain. A plurality of machining machine arms are installed in an inner cavity of the machining table, a steering motor is installed at the bottom of the inner cavity of the machining table, and a steering structure is installed at the top of the steering motor. And tight clamping of the inner hole of the workpiece is achieved. The auxiliary supporting design of the auxiliary supporting plate is matched, the abrasion gap between the clamp and the workpiece can be filled in a targeted mode, loosening and deviation are avoided, compared with a traditional fixing mode, the positioning precision is remarkably improved, the radial deviation during end face turning is effectively reduced, and the consistency of the machining size is guaranteed.

An electromagnetic actuator assembly, integrated within a boring tool, for controlling unwanted machining vibration, comprising an outer tubular oscillating mass made of ferromagnetic material, through which the magnetic flux can pass; an inner stator that comprises an electromagnet assembly, located at the center of the tubular oscillating mass, for applying a controllable magnetic field to the oscillating mass; one or more damping elements, each having one or more springs and / or a damping material with predetermined stiffness and damping properties (such as a polymer or oil); a controller for providing a desired current to the electromagnets of the electromagnet assembly to obtain the controllable magnetic field; a holder for allowing the rotation of the electromagnet assembly to a desired angle, for stimulating the oscillating mass to apply a damping force, based on a combination of the magnetic field and stiffness and damping properties, which is aligned with the direction of the unwanted vibration.

Shaft alignment in machine tools is facilitated. The machine tool includes: a first spindle holding one end of a workpiece; a second spindle holding another end of the workpiece; a sensor detecting a physical quantity related to a vibration during synchronous rotation of the first spindle and the second spindle with the workpiece being held by the first spindle and the second spindle; and a controller performing shaft alignment between the first spindle and the second spindle based on the physical quantity.

Systems and methods of the present disclosure relate generally to facilitate performing a task on a surface such as woodworking or printing. More specifically, in some embodiments, the present disclosure relates to mapping the surface of the material and determining the precise location of a tool in reference to the surface of a material. Some embodiments relate to obtaining and relating a design with the map of the material or displaying the current position of the tool on a display device. In some embodiments, the present disclosure facilitates adjusting, moving or auto-correcting the tool along a predetermined path such as, e.g., a cutting or drawing path. In some embodiments, the reference location may correspond to a design or plan obtained from obtained via an online design store

The utility model provides a lathe spindle hole positioning device which comprises a first expansion core and a second expansion core which are arranged in a mirror image mode, a locking rod is arranged in the first expansion core, a positioning screw is arranged in the second expansion core, the locking rod comprises a screw portion and a polished rod portion, a hexagon nut is arranged at one end of the polished rod portion, and a first flange plate and a second flange plate are arranged at one end of the first expansion core and one end of the second expansion core respectively. The tool has the advantages that the tool can be matched with a positioning screw, the positioning nut and the second expansion core are fastened, and the tool can be installed at any position in a spindle hole according to use requirements to meet the machining requirements of shaft parts of different sizes; the positioning screw is used for replacing a positioning backer to be connected with the expansion core into a whole, a short workpiece can reach the position near a lathe clamping jaw through the positioning screw, the applicability is high, the stability and the abrasion resistance of the part in the machining process are improved, and the percent of pass of workpiece machining is increased.