425results about "Driving apparatus" patented technology

The invention relates to the technical field of engineering machinery manufacturing, in particular to an excavator part machining treatment device which comprises a fixing base, a support is fixedly connected to the fixing base, a driving mechanical arm capable of driving horizontal two-dimensional motion is installed at the top of the inner side of the support, and a sliding disc is fixedly connected to the lower end of the driving mechanical arm. The bottom face of the sliding disc is fixedly connected with a driving cylinder, and the lower end of the driving cylinder is fixedly connected with an inverted-U-shaped frame. According to the excavator part machining treatment device, three core procedures of drilling, inner wall grinding and end face grinding are integrated, through cooperative control of the driving mechanical arm, the driving air cylinder and the motor, full-process part machining can be completed without equipment replacement or repeated clamping, the part transferring and positioning time is effectively shortened, and the machining efficiency is improved. The problem that traditional step-by-step machining is low in efficiency is solved, and the machining efficiency is improved.

The invention relates to the technical field of machine tool debugging, and provides a linear motor machine tool installing and debugging method and a linear motor machine tool. The method comprises the steps that a basic structure of the linear motor machine tool is installed, and the basic structure comprises a machine tool body, a stand column and a cross beam body; a lead screw adjusting tool is installed between a main shaft assembly of the machine head part and the installation base, and the installation base is movably arranged on the cross beam body in the extending direction of the cross beam body; the lead screw adjusting tool is controlled to drive the spindle assembly to ascend and descend relative to the mounting base, and Z-axis precision of the machine head part is detected; and when the Z-axis precision of the machine head part does not meet the design requirement, at least one of the corresponding assembly structures between the main shaft assembly and the mounting seat, between the cross beam body and the stand column and between the stand column and the lathe bed is overhauled. According to the method disclosed by the invention, the debugging workload of debugging personnel is simplified, the debugging difficulty is reduced, ordinary technicians can conveniently and quickly debug the Z-axis precision of the machine tool, and the precision consistency of batch machine tools can be well ensured.

The invention relates to the technical field of machine tool rotating shaft locking, and particularly discloses a rotating shaft locker, a machine tool spindle with a locking function and a locking torque control method. The rotating shaft locker comprises an elastic deformation body, a sealing cavity is formed in the elastic deformation body, and the two axial sides of the cavity are locking function faces of a thin-wall structure; the elastic deformation body is provided with a first connection interface and a fluid transmission interface; the locker main body is provided with a second connecting interface, and a locking matching surface is formed on the inner side of the locker main body; and the feeding device is connected with the fluid transmission interface through a fluid pipeline and is used for inputting a pressure-controllable fluid medium into the cavity of the elastic deformation body. And a rotating shaft locker is arranged on the machine tool main shaft. The locking torque control method is used for the rotating shaft locker. Therefore, the problems that in an existing main shaft locking technology, the locking rigidity is insufficient, the structural integration degree is low, the thermal adaptability is poor, angle positioning is not flexible, and the service life of a bearing is negatively influenced by locking force transmission are solved.

The welded steel pipe chamfering machine table for the crawler crane tower comprises an L-shaped frame, an air cylinder is fixedly connected to the end wall of the top of the frame, and a fixing base is in transmission connection to the lower end wall of the air cylinder. The welded steel pipe chamfering machine table for the crawler crane tower has the beneficial effects that during chamfering, the liquid base is assembled and connected to the side wall of the fixing base through the positioning screws, the liquid base is convenient to disassemble and assemble, a liquid conveying pipeline is connected to a liquid pipe opening of the liquid base, liquid is poured into an inner cavity of the liquid base and then sprayed out through a spraying hole in the end wall of the right side of a penetrating opening of the liquid base, and therefore chamfering is achieved. The end wall of the right side of the penetrating opening is inclined, spraying holes formed in the end wall of the right side of the penetrating opening are inclined and annularly distributed in a round hole in the right side of the penetrating opening, the spraying holes spray liquid, the liquid is poured to the chamfering tool bit from the chamfering tool bit by 360 degrees, and the chamfering tool bit is protected; the chamfering tool bit is protected in all directions without dead angles, and the cooling effect of the chamfering tool bit is improved.

A device for machining a workpiece with a tool is shown and described. The device comprises a base and a tool head movably mounted on the base in a first direction. The tool head includes at least a first gear rotatable about a first axis of rotation and a second gear rotatable about a second axis of rotation, the second axis of rotation extending along a straight line along which the first axis is also oriented. The first gear and the second gear are operatively connected to transmit a rotation from the first gear to the second gear, and the second axis of rotation is offset from the first axis of rotation in a second direction, the second direction being perpendicular to both the first and second axes of rotation.The tool head further comprises a tool holder rotatable about the second axis of rotation and connected to the second gear, configured to receive the tool so that the tool, together with the tool holder, can be rotated about the second axis of rotation. The device further comprises a first drive operatively coupled to the first gear and configured to drive the first gear, and a second drive operatively coupled to the tool head and configured to move the tool head relative to the base in the first direction.

The invention discloses a dimple speed regulation device and method based on a two-stage speed regulation valve. The dimple speed regulation device comprises an integrated set sensing switch, a wireless pilot controller, the two-stage speed regulation valve and an assembly of the two-stage speed regulation valve. According to actual working conditions on site, dimple speed adjustment of a semi-automatic drilling and dimple integrated tool or a manual dimple tool is achieved, and meanwhile dimple surface quality and hole making efficiency are guaranteed. During dimpling operation, the integrated set sensing switch of the device needs to be installed on a semi-automatic drilling and dimpling integrated tool or a manual dimpling tool, a high-speed mode is started during drilling, the device is switched to a low-speed mode according to the vibration condition of the tool during dimpling, and the dimpling rotating speed of the tool is limited; when a manual dimple tool is used for machining a composite material, the device starts the tool in a low-speed mode when a dimple drill does not make contact with a machining material, the device is switched to a high-speed mode according to the vibration condition of the tool after making contact with the material, the device is switched to the low-speed mode when a tool retracts to be separated from the material, and low-speed advancing and retreating and high-speed dimple are achieved.

The application relates to a two-dimensional adjustable ultrasonic vibration auxiliary cutting device which comprises a vibration flat plate, a supporting base, four supporting columns, a stepped horn a, a stepped horn b, a longitudinal vibration piezoelectric transducer a and a longitudinal vibration piezoelectric transducer b. The vibration flat plate is of a stepped structure. The four supporting columns are vertically arranged, the upper ends of the four supporting columns are fixedly connected with the four corners of the vibration flat plate respectively, and the lower ends of the four supporting columns are fixedly connected with the supporting base simultaneously. The stepped horn a and the stepped horn b are horizontally arranged. The small end of the stepped horn a is fixedly connected with the center position of the left side surface of the vibration flat plate perpendicularly, and the large end is fixedly connected with the longitudinal vibration piezoelectric transducer a. The small end of the stepped horn b is fixedly connected with the center position of the back side surface of the vibration flat plate perpendicularly, and the large end is fixedly connected with the longitudinal vibration piezoelectric transducer b. The device has the characteristics of simple structure, less energy dissipation and good machining stability, and can realize efficient and low-damage milling and pin machining.

The invention discloses a machining tool that produces little wear at the joint of a main drive shaft (14) and a transmission shaft (5). The machining tool comprises an upper shaft (6) attached to a main machine device, a transmission shaft (5) inserted into the upper shaft (6), a main drive shaft (14) attached to the head of the transmission shaft (5), a holder (15) inserted into the head of the main drive shaft (14) and having a cutting tool attached thereto, a spherical bearing (4) supporting the outer side of the main drive shaft (14) so that the main drive shaft (14) can be tilted, a center steel ball (7) clamped between the recess of the head of the transmission shaft (5) and the opposite recess of the rear end of the main drive shaft (14), and an axial steel ball (10) disposed in the long groove (11) of the outer surface of the head of the transmission shaft (5) and in the hole (18) of the main drive shaft (14).

The invention belongs to the technical field of numerical control machining of aluminum alloy hubs, and discloses multi-axis numerical control turning and milling combined machining equipment for multi-axis linkage of aluminum alloy hubs, which comprises a numerical control turning and milling combined machining head, one end of the numerical control turning and milling combined machining head is fixedly connected with a shaft fixing chuck used for placing and connecting a machining workpiece, and the other end of the numerical control turning and milling combined machining head is fixedly connected with a spindle. A numerical control clamping and fixing part is arranged in the inner wall of the shaft fixing chuck and used for rigidly clamping and fixing a machined workpiece, a flexible clamping and fixing part is arranged in the inner wall of the shaft fixing chuck and used for flexibly clamping and fixing the machined workpiece, and a clamping calibration assembly is arranged in the flexible clamping and fixing part. Initial fixation is provided through cooperation of a slope clamp and a rubber filler strip, a rigid clamping layer is formed through feedback closed-loop control of an electric cylinder by a pressure sensor, a natural rubber ball body is embedded in a rubber sleeve, and a flexible compensation layer is formed by self-adaption to workpiece deformation and dynamic compensation vibration deviation under the suction action of an elastic corrugated pipe.

A machine tool includes: a movable body that supports a tool; a feed drive unit that feed-drives the movable body; a numerical control unit that controls the feed drive by the feed drive unit to perform cutting by the tool; an acceleration sensor that is provided on the movable body and detects acceleration of the movable body; and a command unit that outputs a stop command to stop driving of the feed drive unit to the numerical control unit when the acceleration of the movable body exceeds a threshold value set in advance on the basis of an output of the acceleration sensor. The command unit sets the threshold value to a first threshold value in a cutting control state, and sets the threshold value to a second threshold value lower than the first threshold value in a feed control in a non-cutting control state.

The invention relates to the technical field of drilling and cutting, in particular to drilling and cutting integrated equipment for a water meter shell. According to the technical scheme, the device comprises a rack, a driving mechanism arranged on the rack, and a clamping mechanism and a moving platform which are driven by the driving mechanism at the same time; a drilling and cutting mechanism is arranged on the moving platform; the clamping mechanism comprises a clamping assembly used for initial clamping and a fixing assembly which can act in a linkage mode during machining stress so as to implement secondary clamping. The drilling and cutting mechanism comprises a drilling and cutting assembly used for executing machining and a counter-force compensation mechanism capable of dynamically compensating displacement of a cutter. Continuous integrated machining of drilling and cutting is achieved through synchronous driving rotation and feeding, linkage of the fixing assembly and the counter-force compensation mechanism is triggered through cutting force, dynamic impact in the machining process is effectively buffered, the clamping stability is enhanced in a self-adaption mode, cutter displacement is compensated, and machining precision is improved. Therefore, the machining precision and reliability are improved while the efficiency is improved.

This invention discloses a cutting device and process for square aluminum rear axle drive housings, belonging to the field of rear axle drive housing manufacturing technology. It includes a support platform for placing the square aluminum rear axle drive housing, a base, a waste collection assembly, a cutting assembly, and a translation assembly. The cutting assembly includes a C-shaped housing, a blade belt, a C-shaped cover plate, a drive motor, and a tensioning structure. A C-shaped cover plate is detachably connected to one side of the C-shaped housing, and the blade belt is movably mounted on the C-shaped housing via several sets of blade belt mounting structures. The waste collection assembly includes an air jet pipe, a collection hood, and a collection box. A translation assembly is connected to the lower end of the cutting assembly for driving the cutting assembly and waste collection assembly to move back and forth. Through the above methods, this invention can achieve blade belt tensioning, rapid disassembly and replacement, and can also clean and collect debris attached to the blade belt, while simultaneously cooling the blade belt.

The utility model relates to the technical field of armored entrance door panel cutting, in particular to an armored entrance door panel cutting device which is provided with an inclined mechanism and a material pushing mechanism, so that materials in the cutting process can be automatically discharged in the armored entrance door panel cutting process, and the machining efficiency is improved. Comprising a tilting mechanism; the device further comprises a pushing mechanism, an adjusting mechanism, a cutting mechanism, a filtering mechanism and a flushing mechanism, the pushing mechanism is installed on the inclined mechanism, the adjusting mechanism is installed on the inclined mechanism, the cutting mechanism is installed on the adjusting mechanism, the filtering mechanism is installed at the right end of the inclined mechanism, and the flushing mechanism is installed at the rear end of the filtering mechanism. The inclining mechanism inclines, the pushing mechanism pushes materials, the adjusting mechanism adjusts the materials, the cutting mechanism cuts the materials, the filtering mechanism filters the materials, and the flushing mechanism flushes the materials.

The utility model relates to the technical field of electric clamping systems, in particular to an electric clamping system with stroke control, which comprises a controller, an encoder, a driving motor and a rotary force transmission device, the rotary force transmission device is further provided with a lead screw main body and a lead screw nut, and the lead screw nut is sleeved on the periphery of the lead screw main body and matched with the lead screw main body. The lead screw nut is driven to axially move when the lead screw body rotates, the rotating speed of the lead screw body is matched with the axial movement of the lead screw nut, the output end of the driving motor is in driving connection with the lead screw body, the encoder is used for reading the rotating speed of the lead screw body, and the encoder is in communication connection with the controller and sends a rotating signal to the controller. And the controller controls the axial movement of the lead screw nut according to the rotation signal. The encoder is arranged to read the rotating speed of the lead screw body so as to limit the stroke, namely the starting position and the maximum stroke position, of the lead screw body, an electromagnetic inductor does not need to be arranged for soft limiting, and the starting position and the maximum stroke position can be limited respectively.

A horizontal machining center with a shock-absorbing braking mechanism, comprising a lathe body (1) including a lathe bed (102), a chuck (103), a spindle housing (104), and a slide housing (105). The lathe bed (102) is equipped with a guide rail (108), and the slide housing (105) is equipped with a tool holder assembly (106). One end of the inner shaft (201) near the chuck (103) is provided with a brake disc (203), and the spindle housing (104) is provided with a spindle braking device (5) comprising a first (6) and a second braking device (7) arranged symmetrically on either side of the brake disc (203) and a return device (8) located between the two. (Shortcut figure: Figure 1)

The invention discloses a combined drilling device for channel steel, and belongs to the technical field of machining equipment. The device comprises two groups of horizontal guide rail devices which are symmetrically arranged, a workbench main body which is arranged between the two groups of horizontal guide rail devices, a cross beam, a feeding raceway device and a discharging device. A sliding sleeve head saddle and a sliding table saddle are installed on the horizontal guide rail device and the cross beam through lead screw transmission, sliding sleeve type power heads and hydraulic sliding sleeve drilling power heads are carried on the sliding sleeve head saddle and the sliding table saddle respectively, the twelve power heads are symmetrically arranged in the horizontal direction and the vertical direction, and synchronous machining of multiple holes in the three faces of the channel steel can be achieved. The working table body is provided with an elastic carrier roller set driven by a motor and used for conveying, and a precise positioning and clamping system composed of a positioning oil cylinder, a pushing air cylinder, a pressing oil cylinder and an adjustable adjusting base. The radial drilling machine solves the problems that a traditional radial drilling machine is low in channel steel machining efficiency, poor in precision and large in labor intensity, and is particularly suitable for efficient and high-precision drilling machining of batch channel steel parts such as longitudinal beams of belt conveyors.

The utility model relates to the technical field of automobile suspension springs, and discloses a cutting device for processing and manufacturing an automobile suspension spring, which comprises a cutting machine and a positioning component. The cutting machine, the control box, the cutting box, the cutting motor, the cutting disc, the workbench and other structural components are arranged, the automobile suspension spring is cut off through the cutting machine, the automobile suspension spring is positioned and fixed through the positioning assembly, the automobile suspension spring is clamped and fixed through the downward pressing assembly, and the cutting disc is driven to move through the moving assembly; through cooperative use of a sliding block and a sliding rod, a cutting disc moves stably, a workbench is kept stable in a cutting box through a protruding block, the effects that the automobile suspension spring is conveniently clamped and fixed, and the automobile suspension spring is conveniently cut off are achieved, and the problem that when the automobile suspension spring is cut, the cutting efficiency is high is solved. The automobile suspension spring can deform, and cutting dislocation is caused.

The utility model discloses a B-axis swinging head which comprises a swinging head main shaft, a B-axis rotating mechanism and a swinging head base, the B-axis rotating mechanism is arranged in the swinging head base, and the B-axis rotating mechanism comprises a driving motor, a worm, a rotating tower, a time grating assembly and a brake assembly. The output end of the driving motor is in transmission connection with the worm, the worm extends in the axial direction of the worm and is provided with spiral teeth, a plurality of rollers in meshing transmission with the spiral teeth are distributed in the circumferential direction of the rotating tower, the time grating assembly and the brake assembly are coaxially connected to one end of the rotating tower, and the swing head main shaft is coaxially connected to the other end of the rotating tower and rotates around a shaft B through the rotating tower. A compact axial layout is formed by integrating the driving motor, the worm, the rotating tower, the time grating assembly and the brake assembly in the swinging head base. The meshing transmission structure of the worm and the turret roller obviously improves the transmission rigidity and the indexing precision of the rotation of the B shaft. The B-axis swing head is high in overall structure space utilization rate and suitable for being used in a multi-axis linkage machining center.

An electric motor for a motor spindle or a rotary table or a multi-axis rotary head for a machine tool or the like, wherein a stator unit (3) having a coil-carrying stator lamination stack and a rotor unit (7) having at least one rotor shaft rotatable about an axis of rotation are provided, wherein a heat dissipation cooling device (4, 6) having at least one coolant channel (4) through which a coolant can flow is provided for cooling and dissipating the heat of the stator unit (3) and / or the rotor unit (7), wherein a housing (2) comprises an outer surface of the electric motor, characterized in that at least one thermal vacuum insulation unit (1) surrounding the stator unit (3) having the stator lamination stack is arranged outside the heat dissipation cooling device (4, 6) when viewed in the radial direction.

A clamping system having first and second clamping mechanisms with respective contact faces, that are couplable such that the contact faces press together with a coupling force. The first clamping mechanism has first and second elements and at least three clamping spheres, the first and second elements being twistable relative to one another, and the clamping spheres being mounted on fixed positions of the second element to be rollable along a circular line. The second clamping mechanism has groove guides assigned to the clamping spheres which have helical groove courses in clamping portions. When coupling the clamping mechanisms, by twisting the second element relative to the first, first regions of the clamping spheres are moved to a clamping position which presses the contact faces together via coupling force. When coupling, the clamping spheres in the clamping portions roll over large distances, leading to low wear and activation with reduced force.

This invention belongs to the field of milling equipment technology, specifically a milling machine for producing molds for watch movement components. Addressing the issue of the inability to detect and correct gradual spindle deflection in real time during processing, which leads to dimensional errors, reduced surface finish, and even scrap, the invention proposes the following solution: a milling frame body with a Y-linear mechanism on one side, and a spindle housing fixedly connected to one side of the Y-linear mechanism. The spindle housing contains an early warning compensation mechanism. This invention discloses a milling machine for producing molds for watch movement components, which enables online monitoring and dynamic correction of the spindle's operating status. This ensures that when processing complex workpieces with extremely stringent tolerances, such as watch movement molds, it can continuously maintain extremely high processing accuracy and surface finish, significantly reducing scrap rates and improving production efficiency and mold quality.

The invention relates to a rotary head unit (1), a rotary head tool (2), a method in which a machining operation is performed on an opening (83) of a workpiece (84) using the rotary head tool (2), and a centering screw element (3). A rotary head main axis (5) of the rotary head unit (1) is defined by means of a drive body longitudinal center axis (4) of a drive body (K1). A driven body longitudinal center axis (7) of a driven body (K2) and an effector point (8) of a rotary tool effector (6) that is rotationally fixed to the driven body (K2) coincide. The rotary head unit (1) comprises a drive-side constant velocity joint (G1) with a first drive-side joint element (G1.1) that is rotationally fixed to the drive body (K1), and with a second drive-side joint element (G1.2) that is connected to the first drive-side joint element (G1.1).1) is connected by a joint, as well as an output-side homokinetic joint (G2) with a first output-side joint element (G2.1) which is rotationally fixed to the output body (K2), and with a second output-side joint element (G2.2) which is connected by a joint to the first output-side joint element (G2.1), wherein the second joint elements (G1.2, G2.2) are firmly connected to each other along a common straight longitudinal center axis (9) of the coupling body to form a joint coupling body (10).

Provided is a spindle, a router device, and a cutting bit. The spindle may include: a spindle body having an internal space; a rotary shaft in the internal space, and having a receiving space configured to receive one end of a cutting bit, the cutting bit including a plurality of fastening portions spaced apart from each other in a longitudinal direction of the cutting bit and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut a substrate; and a support head at one end of the spindle body, and including a collet connected to one end of the rotary shaft and configured to selectively fasten at least one fastening portion among the plurality of fastening portions.

The invention discloses a mold milling machine, and belongs to the technical field of numerical control machine tools, the mold milling machine comprises a protective fence, the inner side of the protective fence is fixedly connected with a supporting vertical frame, and the top end of the supporting vertical frame is fixedly connected with a machining table. The swing arm push rod outputs action to link the swing arm connecting plate to swing, the swing arm connecting plate links the connecting rotating shaft to rotate around the supporting side plate, and then the connecting rotating shaft links the milling machine chuck and the milling cutter to synchronously rotate, so that the milling cutter can realize flexible adjustment of the machining angle. The milling cutter is used for machining the part in a non-vertical posture, interference between the milling cutter and the machined or non-machined part of the part is effectively avoided, and the technical problem that back gouging and fine machining cannot be conducted on the two sides of the part due to the fact that a main shaft of a traditional device is of a fixed vertical structure is solved.

The invention provides large wind power blade punching equipment which comprises a sliding rail, a negative pressure mechanism, a first electric sliding table and a supporting frame, the supporting frame is provided with a reversing frame and a rotating mechanism, the reversing frame is provided with an adjusting mechanism and a plurality of supports, and each support is movably provided with a sliding frame; each sliding frame is movably provided with a second electric sliding table, an axial punching frame with a mounting seat and an axial telescopic mechanism, the second electric sliding table is provided with a radial telescopic mechanism and a radial punching frame with a mounting seat, each mounting seat is provided with a punching mechanism and a sleeve assembly, and the negative pressure mechanism is communicated with the multiple sleeve assemblies. By the adoption of the structure, multiple positions of the end portion and the side portion of the blade root connecting cylinder can be punched at the same time, waste is recycled in time in cooperation with the negative pressure mechanism and the sleeve assembly in the punching process, the waste is prevented from being sucked into a human body to cause harm, adverse effects of the waste on punching work can be effectively avoided, and the punching efficiency is improved. And the functions of efficient punching and automatic cleaning are achieved.

The invention belongs to the technical field of workpiece machining, and particularly relates to a precision machining, boring, milling and grinding integrated machine tool which comprises a bearing part, a control part, a mounting part and a milling and grinding mechanism. The bearing part comprises a carrying table, a portal frame and a lifting frame, the portal frame is fixedly installed on the upper end face of the carrying table, and the lifting frame is slidably installed on the side wall of the portal frame; the mounting part comprises a mounting frame and a mounting frame, the mounting frame is slidably mounted on the side wall of the lifting frame, and the mounting frame is fixedly mounted on the outer wall of the mounting frame; the control part comprises a control cylinder and a control motor which are fixedly mounted on the upper end surface of the mounting frame; the milling and grinding mechanism comprises a milling cutter mounting head, a grinding head mounting head, a grinding shaft and a milling shaft, the grinding shaft is rotationally mounted on the inner wall of the mounting frame, the grinding head mounting head is fixedly mounted at the bottom of the grinding shaft, and the milling shaft is movably arranged in the mounting frame; through cooperation of the structure, the steps of recalibration and parameter construction are omitted, the machining period is greatly shortened, and the rough grinding efficiency and the groove body surface machining precision are improved.

The application relates to the boring process technical field and discloses a boring process and device based on automobile forging piece machining, wherein an electric sliding rail is arranged in a machining lathe, a boring assembly is fixedly installed at the lower end of the electric sliding rail, a forging piece is fixedly arranged at the lower end in the machining lathe through a mechanical chuck, after positioning of a laser displacement sensor, a connecting shell, an adjusting disc and a connecting rod two are driven to rotate by a driving motor, a conical polishing roller one at the lower end of a hydraulic rod three shell is synchronously driven to rotate, through a sliding block connected by an arc-shaped connecting rod one, an extension column and an arc-shaped connecting rod two, a conical polishing roller two is driven to be symmetrically distributed on both sides of a prefabricated hole, after the hydraulic rod three is inserted into the conical polishing roller two, a micro electric telescopic rod drives a rack gear to mesh with a gear, so that a water-drop-shaped boring cutter is extended and clamped in a clamping groove of the conical polishing roller two, the two polishing rollers are synchronously rotated in an hourglass shape, the synchronous polishing of the edges on both sides of the prefabricated hole can be completed without overturning the forging piece, and the problem of inconsistent progress on both sides and secondary trimming is solved.

The utility model provides a speed change device for a central spindle of a digital drill, which relates to the technical field of spindle speed change and comprises a box body, a servo motor component, a linear guide rail component, a driven shaft component and a hydraulic cylinder. According to the utility model, the main shaft adopts the synchronous belt wheel transmission, and the three groups of synchronous belt wheels are combined with the transmission input shafts with different speed ratios by controlling the driving motor, so that three groups of different main shaft speeds of high, medium and low can be realized, the output torque is expanded, and the requirement on the output torque characteristic when the main shaft is at a low speed is met; large holes can be drilled, the problems that the torque is not enough at low speed and the power of a spindle motor cannot be fully utilized are solved, the production efficiency and precision are improved, different machining requirements are met, the machining range is widened, the rotating speed is increased, and mechanical vibration and noise are reduced.

The invention relates to the technical field of position adjustment, in particular to a mechanical manufacturing and automatic intelligent adjusting mechanism. A reciprocating lead screw is rotationally arranged in a base and connected with a mounting base, a motor is fixed in one end of the base, a connecting frame is rotationally arranged in a long groove between the motor and the reciprocating lead screw, an inner gear ring is fixed to one end of the connecting frame, a plurality of first gears are arranged on the inner side of the inner gear ring, and an outer ring is fixed in the other end of the connecting frame. A mounting frame is arranged in the connecting frame, a sleeve is rotationally connected into the other end of the mounting frame, a sliding shaft is arranged in the sleeve, a second gear is concentrically fixed to the end, close to the inner gear ring, of the sliding shaft, and the sliding shaft is in spline connection with the opposite end of the reciprocating lead screw. Through mechanical linkage of the spiral groove, the ball damping system and the planetary gear set, full-automatic switching between high-speed coarse adjustment and low-speed fine adjustment is achieved, and intervention of an additional sensor or an electric control instruction is not needed.

Multiple steps can be performed with fewer or no tool changes. [Solution] A machine tool is disclosed that includes a holder (32), a first shaft (46) supported by the holder (32) and having an accommodating portion for a first tool (12), a second shaft (56) supported by the holder (32) and having an accommodating portion for a second tool (13), and a first drive shaft (34, 34') mechanically coupled to the first shaft (46) directly or indirectly via a first freewheel clutch (45) and mechanically coupled to the second shaft (56) directly or indirectly via a second freewheel clutch (55).