84results about How to "Guaranteed verticality requirements" patented technology

The invention discloses an automatic focusing device for a projective bulb based on light spot detection and a use method thereof. The automatic focusing device comprises a lamp cup, a lamp cup clamping table, a screw I, a lampwick, a lampwick clamping frame, a large guide rail, a large slider, a screw II, an optical planar lens, a clamping holder, a convex lens, a supporting column, an optical filter, a two-dimensional photoelectric position sensor (PSD), a signal processing system, a PLC (programmable logic controller), a servo motor and a three-dimensional precise adjusting table, wherein light emitted from the lampwick can be reflected by the inner surface of the lamp cup to form parallel light beams, the parallel light beams can be transmitted and reflected twice by the optical planar lens, small parts of the light can be reflected to the convex lens, and then the light irradiates on the PSD by the optical filter after being gathered; a signal output by the PSD can be subjected to a series of conversion by the signal processing system, the PLC, the servo motor and the three-dimensional precise adjusting table; and finally the signal is used to control the position of the lampwick in the lamp cup. The device provided by the invention has the advantages of simple use method, low cost, high efficiency, high focusing precision and the like.

The invention discloses a disc semi-automatic joint welding machine and an operation method thereof. The disc semi-automatic joint welding machine comprises a desk-top frame, a positioning and fastening component, a disc rotary table, a reducing motor, a pedal continuously variable transmission (CVT) electric control device, an anti-interference component and a supporting argon-arc welding machine. An inversed L-shaped bracket is mounted on one end of the upper part of the desk-top frame. The workpiece center is fastened by a top clamp of the positioning and fastening component when the machine operates. The arc striking is slow when welding begins. The pedal CVT electric control device is stepped down to enter a welding stage with constant speed after the workpiece is welded for 1 to 2 centimeters. The disc semi-automatic joint welding machine provided by the invention only needs one person to operate during welding, thus reducing manual work and lowering production cost. The welding machine can also perform welding in place in one shot and the weld joints are artistic. The welding accuracy is improved to 99% from 10% originally, thus solving the difficulty in unqualified welding of joints of a heat exchanger and making up a blank in the manufacturing technique of the heat exchanger.

The invention discloses a drilling and tapping all-in-one machine for machining. The drilling and tapping all-in-one machine for machining comprises a workbench; a workpiece holder is fixed to the right end of the workbench through screws; a chassis is fixed to the left end of the workbench through screws; the chassis is provided with a rotary supporting arm through a rolling bearing; a parallelogram supporting arm is hinged to the right end of the rotary supporting arm through a pin shaft; a self-lifting mechanism is arranged between the parallelogram supporting arm and the rotary supporting arm; a power mechanism is installed at the right end of the parallelogram supporting arm through a triangular connector and connected with a variable-frequency governor through a power signal line; and a drill is installed below the power mechanism through a clamping-connecting head. The drilling and tapping all-in-one machine for machining integrates the drilling and tapping procedures of traditional machining; by the adoption of the parallelogram supporting arm structure, the drill or a screw tap is absolutely perpendicular to the workbench, the requirement for machining perpendicularity is ensured, the power mechanism is controlled by the variable-frequency governor to achieve continuous variable transmission, and the application range is wide.

The invention provides a bevel ratchet wheel compensating device, comprising a ratchet wheel body (1), a ratchet wheel brake frame (2), a long bolt pin (3), a ratchet wheel framework connecting plate (4), a brake pallet (5), a balance wheel (6), a steel wire rope I (7), a steel wire rope II (7') and a cable clamp (8), wherein two rows of symmetrical bevel gears are arranged on the excircle of a bull wheel (12) of the ratchet wheel body (1), the bevel gear is composed of straight teeth (24) and side teeth (25), the straight teeth (24) are arranged at two sides of the circumference surface of the bull wheel (12), and side teeth (25) are arranged at the side wall of the bull wheel (12); and the front end of the brake pallet (5) is provided with a U-shaped brake port (26) of which the width is consistent with the spacing of the bottom parts of the two side teeth (25). In the invention, the ratchet adopts a bevel structure formed by the straight teeth and the side teeth; by optimizing the structure design, the manufacture technology is simplified, the safe use performance is improved so as to lead the working tension to reach 38.85kN and compensation distance to reach 800m, thus not only satisfying the requirements on high tension and large compensation distance for a high-speed electrified railway contact line, but also having convenient installation and maintenance.

A spring clamping and knot-making mechanism for full-automatic spring coiling machine is composed of spring pilot unit, knot length controller, knot making unit, spring clamping unit, knot making cam, big toothed disc, cam for push rod, fixed axle, drive shaft, installing plate, etc.

The invention provides a method for turning a thin-wall steel jacket, and belongs to the technical field of machining. The problems that existing thin-wall steel jacket workpieces are difficult to produce in batches, and progress cannot be guaranteed are solved. The method comprises the following steps that a mixture of 96% carbamide and 4% potassium nitrate is heated to 140 DEG C or above to prepare a self-coagulator, an inner hole of a workpiece is filled with the first batch of self-coagulator at a filling height of A, the inner hole of the workpiece is filled with a second batch of self-coagulator at a filling height of A after the first batch of self-coagulator is solidified, an upper end opening of the workpiece is covered with a rubber pad, the workpiece is turned by 180 degrees, the second batch of non-solidified self-coagulator is enabled to flow downwards, turning on an outer circle and the end face of the workpiece is performed after the second batch of self-coagulator are solidified, the workpiece is clamped by using a special clamp, and rough turning and finish turning on the inner hole of the workpiece are sequentially performed after clamping. The method is mainly used for batch machining on the thin-wall steel jacket.

The invention discloses a draught fan foundation structure with a single pile of transition sections. The draught fan foundation structure with the single pile of the transition sections comprises a single pile body and the transition sections. The transition sections are internally arranged on the inner side of the single pile body and are connected with the single pile body to form a whole through welding. The upper ends of the transition sections are connected with an upper tower barrel through flange rings. Operation platforms are arranged at the upper end of the single pile body and are located on the outsides of the lower ends of the transition sections. The operation platforms are clamped and buckled in preformed clamping grooves in the outside of the upper end of the single pile body. A construction method comprises five steps. The draught fan foundation structure with the single pile of the transition sections is different from a structure scheme with transition sections on the outsides, offshore grouting is not needed, the offshore operation time is saved and the cost is reduced; in addition, the transmission force of the structure is mainly conducted through a welding structure, so that the reliability of the structure is increased. Compared with a single pile foundation without a transition section structure, the requirements for construction equipment and construction technology are lowered; under the background that offshore wind power will be developed on a large scale, the construction progress is speeded up, and the verticality requirement of a single pile foundation and the safety of a flange ring structure can be ensured.

The invention relates to a thin-wall part precision turning machining method and a positioning clamp, in particular to a positioning clamp and a machining method of a gyroscope motor dynamic pressure air bearing rotor cover. The positioning clamp comprises a spherical surface positioning mandrel, a positioning lantern ring, an anti-vibration pad and a back supporting seat. The spherical positioning mandrel is a step shaft with center holes formed in the two end faces, and comprises a clamping section, a large thread section, a second guide cylindrical section, a spherical positioning section, a spherical table end face, a first guide cylindrical section and a small thread section from left to right in sequence. The machining method comprises the steps of first-step machining of the rotor cover, machining of a series of spherical positioning mandrels, machining of a positioning lantern ring and a back supporting seat, selection of a proper spherical positioning mandrel, turning of the rotor cover and the like. The problems that an existing machining method is poor in positioning precision and low in machining efficiency, and the concave spherical surface is crushed are solved, damage to the concave spherical surface is avoided by limiting six degrees of freedom, and the machining precision of the rotor cover is guaranteed.

The invention discloses a self-aligning cage structure for a bag type dust collector. The self-aligning cage structure comprises a top cap and a plurality of vertical ribs, wherein the tops of the vertical ribs are connected to the top cap; and the top cap is arranged on a parquet panel through an adjusting bolt. When the cage is mounted, the cage mounting verticality can be guaranteed by adjusting the height of the adjusting bolt, and in spite of the flatness of the parquet panel, the requirement of the cage mounting verticality can be met so as to prevent the bottom of the cage from being collided and a filter bag from being damaged due to the abrasion of the bottom of the bag.

The invention discloses an aeroengine single cantilever pipeline pipe nipple portion verticality measuring device comprising a positioning plate; the positioning plate is provided with a positioning block fixedly connected with the aeroengine combustion chamber sheath; the positioning plate is also provided with a shaft sleeve; the shaft sleeve is arranged right below the pipe nipple part; a positioning shaft is arranged in the shaft sleeve so as to form sliding matching, and the fitting gap between the shaft sleeve and the positioning shaft is not greater than 0.01mm; the positioning shaft upper portion is provided with a thread ring gauge sleeved with the pipe nipple part; the device also comprises a measuring mechanism used for measuring the gap between the shaft sleeve and the positioning plate contact end face. The device can directly measure the single cantilever pipeline pipe nipple part verticality on a combustion chamber unit assembly, is simple in structure, easy to use, andfast in measuring speed.