43results about How to "Eliminate crawling" patented technology

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.

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 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.