53results about How to "Guaranteed Position Accuracy Requirements" patented technology

The invention discloses a precise bonding device for array magnet steel of a linear motor. The precise bonding device comprises guide sliding rails, a magnet steel bonding base, a pressing part, the magnet steel, a magnet steel guide plate, magnetic yokes, grating rulers and a base, wherein the base is provided with the guide sliding rails; the magnet steel bonding base is arranged on the base and can slide along the guide sliding rail; the magnet steel bonding base is in a hollow structure; a first opening capable of putting the magnet steel into a hollow chamber is formed in the magnet steel bonding base; a second opening capable of placing the magnet steel guide plate is formed in the side wall of the magnet steel bonding base; the magnet steel guide plate is arranged in the second opening; and the magnet steel is pushed into a hollow chamber from the first opening and can be adsorbed on the magnet steel guide plate until the magnet steel is completely pushed into the hollow chamber. The magnetic-conducting magnet steel guide plate is arranged; the magnet steel is adsorbed on the guide plate in the bonding process; with the guide plate as a displacement reference, the motion displacement of the magnet steel is measured through the grating rulers; and precise adjustment on displacement of the magnet steel is achieved, so that array distribution of the magnet steel on the magnet yokes is achieved.

The invention discloses a method for gluing and assembling a string-tensioned semi-rigid base plate frame, comprising: gluing a central frame; installing a reinforcing beam and a limit beam for trial assembly; gluing an outer frame; gluing a corner box and a corner sheet to obtain a stretched-string semi-rigid substrate frame. The invention solves the problems of the existing stretched string type semi-rigid substrate frame gluing process method, such as compact gluing period, poor assembly precision, large assembly stress and the like.

The invention discloses a photoetching machine movement platform and a micro movement platform thereof, and a control method of the micro movement platform. According to the present invention, a reluctance motor and a high-precision voice coil motor are symmetrically distributed and are combined to form the structure of the micro movement platform, wherein the reluctance motor provides high thrusting force required by high acceleration, and the voice coil motor provides high-precision positioning ability, such that the use of the dual motor drive mode integrates the advantages of both motors while the shortcomings of both motors are avoided; according to the control scheme, the double-channel double-motor control mode is used, the feed forward channel comprises the open-loop controlled reluctance motor, the high thrusting force required by the high acceleration / deceleration process of the micro movement platform can be ensured through the high thrusting force property of the open-loopcontrolled reluctance motor, and the bandwidth controlled by the current loop comprising the reluctance motor and the power amplifier is generally greater than the bandwidth controlled by the positionclosed loop so as to easily achieve rapid tracking; and by using the voice coil motor as the feedback control, the precision during the constant-speed movement and the positioning can further be ensured.

The invention relates to an automatic accurate measuring machine for a cone bearing gasket. The automatic accurate measuring machine comprises a lifting machine head, an off-shell measuring mechanism,a changing-shell measuring mechanism and a rotary simulation mechanism, wherein the off-shell measuring mechanism comprises a loading cylinder, an off-shell measuring plate and a cone bearing outer ring measuring head, the off-shell measuring plate is mounted on the lifting machine head in a floating mode, the cone bearing outer ring measuring head is driven to realize lifting through the loadingcylinder and presses against a cone bearing outer ring on an off shell during measurement, the changing-shell measuring mechanism comprises a measuring cylinder, a guide shaft, a changing-shell measuring plate and a deep hole measuring head, the changing-shell measuring plate is mounted on the lifting machine head in a floating mode, a lower end of the guide shaft penetrates through the changing-shell measuring plate, is then connected with the deep hole measuring head and is lifted through the measuring cylinder, the deep hole measuring head stretches into a to-be-measured hole during measurement when a measuring pressure plate on the guide shaft presses a displacement sensor, and the rotary simulation mechanism used for driving a differential mechanism to rotate is arranged below the lifting machine head. The automatic accurate measuring machine is advantaged in that parameters of the cone bearing gasket can be accurately measured, and actual conditions can be simulated during measurement.

The invention discloses an angle workbench of a high-precision combined too. The angle workbench of the high-precision combined tool comprises a lower foundation plate, an upper foundation plate, a supporting part and a connecting plate; the supporting plate is vertically fixed on the lower foundation plate; two lower V-shaped supporting blocks which have the same structure are arranged close to one side of the lower foundation plate; the supporting part comprises a rectangular supporting element and an upper V-shaped supporting block; the upper V-shaped supporting block is structured the same as the lower V-shaped supporting blocks, and a central line of the upper V-shaped blocking block is parallel to the center lines of the two lower V-shaped supporting blocks; three trimming shafts which have the same structure and are integrally connected with the upper foundation plate are arranged on one downward surface of the upper foundation plate; respectively positioned on the two lower V-shaped supporting blocks and one upper U-shaped supporting block. With the adoption of the structure above, the angle workbench of the high-precision combined tool has the advantages that the precision of the combined clamp is greatly improved; a plurality of surfaces of a workpiece can be processed and qualified by one-time positioning clamping, and therefore, the processing efficiency is increased, and the manufacturing cost is decreased.

The invention discloses a method for replacing and positioning an external prestressed anchor backing plate of a segmental beam, comprising steps: 1. Installation and preliminary positioning of a straight conduit: after the stiff skeleton used for construction of a segmental beam is installed, according to the pre-designed The installation position of the prestressed anchor backing plate at the end of the section beam is to install a straight conduit on the stiff skeleton; the inner diameter of the straight conduit is greater than the diameter of the installation hole opened on the prestressed anchor backing plate; two, steel cage binding ; 3. Replacement and precise positioning of the prestressed anchor backing plate: take out the straight pipe, install the prestressed anchor backing plate at the installation position of the straight pipe, and adjust the position of the prestressed anchor backing plate until the prestressed anchor backing plate is placed Backing plate installed in place. The method has the advantages of simple steps, reasonable design, convenient construction, and good application effect. It can easily and quickly complete the positioning process of the external prestressed anchor pad, and can effectively reduce the construction difficulty and greatly improve the construction efficiency.