43results about How to "Eliminate crawling" patented technology

A high-precision hand drill comprises a handle, a chuck and a drive pair. The high-precision hand drill is characterized in that the drive pair comprises a lead screw and a holding sleeve; the inner side of the holding sleeve is provided with a thread corresponding to the lead screw and balls; the holding sleeve and the lead screw form a lead screw and nut pair through the thread and the balls; the chuck is fixedly connected to the front end of the lead screw; the handle is provided with a cylindrical hole; and the cylindrical hole is rotationally connected to the outer side of an unthreaded rod in a sleeving manner. The high-precision hand drill has the beneficial effects that the structure is simple, labor is saved, high efficiency is achieved, and drilling accuracy is high.

The invention provides a crawler guide rail drive micro feeding servo system and a synchronous control method. The system comprises a work table servo motor A and a crawler guide rail servo motor B, the work table servo motor A drives a ball screw and drives a worktable to do linear motion, the crawler guide rail servo motor B drives a crawler guide rail to move, instantaneous speeds of the two are equal, the directions are same, and it is ensured that the worktable and the crawler guide rail achieve instant synchronizing. Linear motion climbing is thoroughly removed, the novel feeding servo system shows the excellent characteristics, and is used for the modern numerical control equipment industry, and through the extremely low making cost, the extremely high machine tool precision and performance can be obtained.

The invention discloses a gyro rotor mass center position accurate adjustment device and method based on an ultrasonic antifriction effect, and belongs to the field of small displacement adjustment of precision machinery. An ultrasonic transducer is added between an adjusting screw and a gyro clamp; in the adjusting process, the ultrasonic transducer transmits ultrasonic vibration to the adjusting screw; and at the moment, the adjusting screw has already been screwed into a rotor adjusting screw hole, so that the ultrasonic vibration can be transmitted to a gyro rotor through transmission of the adjusting screw to realize ultrasonic vibration between rotor contact surfaces. Transverse vibration between the contact surfaces can reach the ultrasonic antifriction effect, and besides, through axial rotation of the adjusting screw, accurate adjustment of gyro rotor mass center position can be realized under the condition of smaller friction force. The device and method can effectively reduce the friction force between the rotor and bearing contact surfaces, thereby reducing creeping phenomenon and improving adjusting precision and efficiency; and the device and method can be widely applied to the small displacement accurate adjustment process.

The present invention discloses a pneumatic unloaded slideway coated with plastic, comprising a slideway and a worktable; the surface of the slideway is pasted with a flexible lacing layer which is provided with inlet ports of oil gas; every inlet port of oil gas is communicated with the output end of the control valve of the inlet port of oil gas, the control valve of oil gas has an oil pipelineinput end and a gas pipeline input end; the oil pipeline input end is connected with an oil filter and an oil pump in series and in sequence, and the gas pipeline input end is connected with a press gauge, a pressure relief valve, a magnetic valve, an air filter and the air source in series and in sequence; and a pressure relay is connected with the node of the air filter and magnetic valve. The present invention has the advantages that: the present invention is suitable for the variable machine tools, and the friction coefficient of the flexible lacing layer of slideway is low. The present has good self-lubricating performance, thereby avoiding the scratching of the slideway; the precision of the slideway is increased, the noise and the vibration are reduced and the surfaced process quality of element is improved. The present invention applies compression air to mix with the lubricant which is pumped out by the control valve of oil gas and the oil pump, and then the oil gas is supplied to the flexible lacing layer of the slideway; thus, the burden of the slideway is unloaded at 70-80 percent, thereby reducing the rotary friction of the worktable.

The invention relates to a magnetic suspension supporting structure of a straight feeding unit. A workbench of the magnetic suspension supporting structure consists of an upper workbench and a supporting device and operates along guide rails of a machine body; the central position of the lower surface of the upper workbench is provided with a rigid rectangular frame which is protruded downward and is distributed along the longitudinal direction; the left and right sides of the rectangular frame are symmetrically and horizontally provided with two guide electric magnets; the stress of the guide electric magnets in the horizontal direction is conveyed to the upper workbench by virtue of the rectangular frame; the guide rails of the machine body are provided with guide armature irons matched with the guide electric magnets; the supporting device comprises a support column, an upper supporting electric magnet and a lower supporting electric magnet; the guide rails of the machine body are provided with an upper supporting armature iron and a lower supporting armature iron. The magnetic suspension supporting structure is reasonable in structure and convenient to implement, can be used for performing long-stroke effective magnetic suspension supporting and guiding of the workbench, obviously enhancing the interference capability of anti-guiding external force against the rigidity of the workbench, reducing the coupling of magnetic fields and reducing the processing and control difficulty of the magnetic suspension straight feeding unit, and is applicable to a high-precise efficient numerically-controlled machine.

The invention discloses a precision interference fit assembly method of a slender shaft type part, and the method is characterized in that a pressure device is used for adopting a direct press-mounting method for press-mounting, an inner sleeve part is pressed into an outer sleeve part, and a percussion device is simultaneously adopted for repeatedly rapping the inner sleeve part to enable the inner sleeve part to shake in the direction which is vertical to the press-mounting direction during a press-mounting process till the assembly is completed. By adopting the method, the creeping phenomenon can be effectively eliminated, the assembly size precision requirement of the slender part in the length direction can be further improved, and the precision size of the slender part in the lengthdirection can be ensured; and through specific experimental verification performed by an applicator, the press-mounting precision in the length direction can be controlled within 0.05mm by adopting the method disclosed by the invention. Simultaneously, the method further has the advantages of being convenient and fast to implement, reducing the labor intensity, improving the production efficiencyand the like.

The invention discloses a special cement sleeve online machining device and relates to the field of cement equipment maintenance. The special cement sleeve online machining device comprises a lathe bed and a grinding mechanism transversely sliding along the lathe bed. A large supporting plate sliding in the longitudinal direction is arranged on the surface of the lathe bed, and a vertical plate perpendicular to the sliding direction of the large supporting plate is fixed to one end of the upper surface of the large supporting plate; the grinding mechanism comprises a grinding wheel and a driving motor, the grinding wheel is connected with the driving motor through a transmission belt, the grinding mechanism is connected with a small supporting plate through a slideway, a screw rod driven by a hand wheel is fixed to the small supporting plate, and a nut matched with the screw rod is fixed to the grinding mechanism; the small supporting plate is fixed to the large supporting plate or the vertical plate through bolts; a rack is fixed to the lathe bed in the longitudinal direction of the lathe bed, a motor is fixed to the large supporting plate, and a gear a meshed with the rack is fixed to an output shaft of the motor; the lathe bed is further fixedly provided with a manual adjustment mechanism playing a fine adjustment role in sliding of the large supporting plate. Online machining of cement sleeves can be achieved without disassembling the cement sleeves, disassembling cost is saved, and the application range is wider because of horizontal and vertical conversion.

The invention provides a linear sliding device, and relates to the field of guide mechanisms. The linear sliding device comprises a first guide rail, wherein the first guide rail is provided with a first groove; a second guide rail which is provided with a first boss, wherein the first boss is contained in the first groove, the first boss can slide relative to the first groove, and lubricant is contained between the first boss and the first groove; an ultrasonic vibrator fixedly connected to the second guide rail, wherein the axis direction of the ultrasonic vibrator is parallel to the sliding direction of the first boss. The vibration of the ultrasonic vibrator drives the first boss to vibrate at high frequency and low amplitude, so that the lubricant is in a fluid state, and the creeping phenomenon at low speed is effectively eliminated. Meanwhile, the low-amplitude vibration of the ultrasonic vibrator does not influence the sliding stability and precision.

A controllable excitation linear synchronous motor magnetic levitation motion platform for a vertical machining center, characterized in that: the magnetic levitation motion platform includes a motion platform, a base, a controllable excitation linear synchronous motor, a suspension control system and a motion control system; Adjust the current of the armature winding to change the electromagnetic thrust; the magnetic levitation force is the unilateral magnetic pull generated between the excitation pole on the stator and the mover core of the linear synchronous motor. The magnetic levitation force is adjusted by adjusting the excitation current. The motion platform relies on two The magnetic levitation force generated by the motor itself operates, and has the ability of direct automatic levitation.

The invention relates to the technical field of numerical control machine tools, and discloses a full stepless speed change numerical control lathe based on double triangular guide rails. Comprising a machine body, a base and a machine body, the base is an integrated bottom plate, the stability and rigidity of the base are improved, then the stability of the machine body is improved, a supporting plate is arranged on the surface of the base and used for supporting the machine body, and the surface of the supporting plate protrudes out of a forward projection plane in the overlook direction of the base and used for improving the rigidity of the supporting plate. According to the full stepless speed change numerical control lathe based on the double triangular guide rails, through the integral bottom plate design of the base and the design of the supporting plate, the rigidity of the surface of the supporting plate can be improved, meanwhile, the stability of the tool rest in the cutting process is improved, three-point supporting of the first lead screw and the second lead screw can be achieved through the design of the supporting piece, and then the stability of the first lead screw and the second lead screw is improved; the surface of the lathe bed adopts a triangular guide rail design, so that the stability of the workpiece machining process and the workpiece surface machining precision can be improved.

The invention discloses a three-upright-post portal support frame climbing device, which comprises an installing frame, wherein the installing frame is in a regular triangle shape, in addition, each end point of the installing frame is respectively and fixedly connected with a lifting mechanism, the middle part of the installing frame is fixedly connected with a cross joint, one end of the cross joint is provided with a servo motor, each of the other three end surfaces is respectively hinged to a transmission shaft, the other end of each transmission shaft is hinged to the input end of the lifting mechanism, the lifting mechanism comprises a reversing speed reducer, and the output end of the reversing speed reducer is connected with two chain wheels in coaxial arrangement. The three-upright-post portal support frame climbing device is matched with three groups of chains arranged on a portal frame to be used, the impact generated by sudden starting and sudden stopping of an ordinary ascending and descending machine can be effectively absorbed, the three-upright-post portal support frame climbing device is particularly applicable to the ascending and descending transfer operation of precision equipment or instruments, and the equipment or instruments cannot be damaged.

The invention discloses an automobile engine cooling water pump. The automobile engine cooling water pump comprises a pump case. The pump case is composed of a main cavity in the middle, a gear cavityand an impeller cavity, and the gear cavity and the impeller cavity are located on the two sides of the main cavity. A gear is arranged in the gear cavity. An impeller is mounted in the impeller cavity. A rotary shaft is horizontally connected from the gear cavity to the impeller cavity. The rotary shaft penetrates through the whole pump case. An oil seal is arranged on the shaft wall of the rotary shaft in the main cavity. A water seal is arranged on the side, close to the impeller cavity, of the oil seal and is arranged around the shaft wall of the rotary shaft. The side, far away from theoil seal, of the water seal is closely attached to the inner wall of the main cavity. A ball groove is horizontally formed below the rotary shaft, and a steel ball is arranged in the ball groove. Oneend of the ball groove is arranged in the position, close to the gear cavity, of a main cavity inner wall. A cooling liquid channel is arranged below the ball groove. The cooling liquid channel is connected between the main cavity inner wall and the impeller below the ball groove. The cooling liquid channel and the inner wall of the lower end of the main cavity are fixed through a supporting piece. The automobile engine cooling water pump improves the working efficiency, reduces manpower and material resources, achieves the better lubricating effect, reduces noise and is simple in structure and convenient to operate.

The invention relates to an annular gear ring device belonging to the field of machine tools. The annular gear ring device is provided with a left shell and a right shell, wherein lead screw holes are processed at the middle parts of the left shell and the right shell; three rotating shafts are installed around the lead screw holes, wherein one rotating shaft is an eccentric shaft; two ends of each rotating shaft are respectively fixed on the left shell and the right shell; the three rotating shafts are respectively sleeved with a cylindrical roller; each roller can rotate around each rotating shaft; and an annular gear ring is processed on the outer edge of each roller.