33results about How to "Arc smooth" patented technology

The invention discloses a steel pipe bending machine. The steel pipe bending machine comprises a base on which a cylinder is arranged; a gear which engages with a rack is arranged at the end part of the cylinder; the rack is fixedly arranged on a baffle on the base; a motor is arranged on the base; a transmission gear set is arranged at the lower end of the motor; a cushion block is arranged at the lower end of the transmission gear set; a pneumatic control switch is arranged at the lower part of the cushion block; a workbench is arranged at the front end part of the base; a lifting cylinder is arranged at the lower end of the workbench; a steel pipe bending die set is arranged on the workbench; the head part of the lifting cylinder passes through a through hole in the workbench and then is propped against the bottom part of a steel pipe bending die set; the steel pipe bending die set is of a concave-convex alternated shape. The invention also discloses a forming process of the steel pipe bending machine. With the adoption of the steel pipe bending machine and the forming process therefore, a steel pipe can be bent and formed at a time, and the situation that single surface of the bent steel pipe is incompletely processed can be avoided; in addition, the bent pipe has a smooth and clear circular arc, and the deformation of the steel pipe is reduced.

The invention relates to a construction method for a large-span folded-plate shaped steel roof truss, which comprises a roof truss support, a plurality of normal ∨-shaped steel frame units, a plurality of inverted ∧-shaped steel frame units and aerial scattered units to form an integral roof steel frame in the shape of a folded plate , is characterized in that: the construction method is to use the ground to process the ∨-shaped steel frame unit and the inverted ∧-shaped steel frame unit, and hoist the inverted ∧-shaped steel frame unit and the normal ∨-shaped steel frame unit as a whole and the aerial scattered units. Between the inverted ∧-shaped steel frame unit and the normal ∨-shaped steel frame unit, aerial assembly technology is used for aerial assembly; the advantages are: to solve technical problems such as ground assembly and aerial in-situ measurement speed, accuracy, deformation, etc., and realize the installation accuracy of steel structures. , quality and safety, effective control of project progress; reasonable division of roof steel frame hoisting units, the use of integral hoisting, reducing high-altitude operations, can greatly improve the use efficiency, safety factor, construction quality and construction efficiency of large-scale lifting machinery, reduce construction costs cost.

The invention relates to a pattern drafting method and a sewing method for jacket-style garment sleeves. The pattern drafting method comprises the following steps: tailoring the front part and the back part of garment; splitting the front part, and putting the split front parts at the upper ends of shoulders of the back part, and making bust lines; making a back broadline, marking sleeve cap curve lines, and making top sleeve split lines TT1 and under sleeve split lines TT2, and connecting Y1T1 with G1T2, wherein Y1T1 refers to top sleeve opening lines, and G1T2 refers to under sleeve opening lines; the sewing method for the jacket-style garment sleeves, disclosed by the invention, comprises the following steps: performing overlap sewing on a front position C of a garment body and sleeve front points C, performing the overlap sewing on an R point and V points, performing the overlap sewing on an K2 point and Q points, performing the overlap sewing on a P point and T points, performing the overlap sewing on each S point and a corresponding O point, performing the overlap sewing on an X position and an intersection points formed after a Y point on each top sleeve and a G point on a corresponding under sleeve are sewed. According to the pattern drafting method and the sewing method disclosed by the invention, two shoulder parts of a ready-made garment both show bent and smooth curves, and a shoulder seam is prevented from appearing at shoulder points, so that armhole curves are tidy, attractive and smooth after a wearer wears the jacket-style garment sleeves, the comfort level is improved, and the product quality is also improved.

The invention relates to a profiling intelligent floor cleaning robot, and belongs to the technical field of floor cleaning devices. The robot comprises a robot body, visual sensors, road wheels, a controller, control arms and cleaning modules, the controller is arranged in the robot body, the visual sensors are arranged in the upper portion of the robot body, the road wheels are arranged in the bottom of the robot body, the control arms are arranged in the two sides of the robot body respectively, the end of each control arm is connected with the corresponding cleaning module, each cleaning module comprises a connection board, transverse plates, a support, crankshafts, a first bevel gear, a control motor, a driving bevel gear, a guide road, a shoe plate and an elastic sleeve, the transverse plates are arranged at the two sides of the end of the connection board respectively, and the support is arranged separately from the transverse plates; and the crankshafts are rotationally connected with the support, the guide rod is installed in one side of the support in a sliding way, the guide rod is arranged corresponding to an eccentric groove of the crankshaft, the end of the guide rodis fixedly connected with the shoe plate, the elastic sleeve wraps the shoe plate and the transverse plates, and the bottom of the elastic sleeve is provided with brushing hair. The profiling intelligent floor cleaning robot is especially suitable for cleaning the arc-shaped cleaning surface, and can improve the cleaning efficiency.

The invention belongs to the technical field of brush electroplating, and specifically relates to an electroplating brush pen. The electroplating brush pen comprises a rod body, a fixed plate, an electroplating module and a clamping module, wherein the electroplating module comprises installation plates, supporting plates, connecting plates and anode plates; two installation plates are parallellyarranged on the fixed plate; the end heads of the installation plates are fixedly connected with the supporting plates; a group of connecting plates are arranged between the two supporting plates; theconnecting plates are erected on the two installation plates; two adjacent connecting plates are connected through an arc-shaped spring; the arc-shaped springs are outwards arched; the connecting plates can slide on the surfaces of the installation plates; the connecting plates are fixedly connected with the anode plates; the anode plates are provided with hair bundles; the clamping module is arranged at the side edge of the electroplating module; the clamping module is used for regulating the space between the two connecting plates and enabling the group of connecting plates to form an arc-shaped surface. The electroplating brush pen disclosed by the invention is suitable for electroplating operation of an arc-shaped annular groove and an arc-shaped groove, and is capable of increasing the efficiency of the electroplating operation of the arc-shaped annular groove and the arc-shaped groove and ensuring the thickness uniformity of an electroplating layer.

The invention discloses a metal reed one-time forming device used for a patch panel. The metal reed one-time forming device is characterized by comprising a fixed base plate which is horizontally arranged, a long-strip-shaped sliding transverse strip is arranged on the fixed base plate, a slidable cylinder base is arranged on the sliding transverse strip, a detachable double-head cylinder is arranged on the cylinder base, a pair of detachable side position supports are arranged at the heads of the double-head cylinder, and forming chucks are arranged on the heads of the side position supports respectively. After the double-head cylinder is started, the pair of side position supports synchronously move outwards, the forming chucks expand outwards at the same time, forming mold plates on the heads of the forming chucks directly act on a copper metal reed, and therefore the metal reed can be rapidly formed, forming is rapid, cambered surfaces are smooth, the electrical quality of the patch panel is greatly improved, and practicability is high.

The invention belongs to the field of diesel engine equipment and particularly relates to an air inlet tube for an air cleaner and a manufacturing technology for the air inlet tube. The air inlet tube comprises an air inlet elbow and a casing tube. The casing tube is arranged at an air inlet elbow and air cleaner connection end, the casing tube is integrated with the air inlet elbow, and the casing tube is a stamping tension portion of the air inlet elbow. The air inlet tube is smooth and flat in surface, smooth in arc, attractive and elegant, simple in production technology, capable of reducing the production cost and improving the work efficiency, convenient to mount and beneficial to environmental protection.

The invention discloses a shoe tongue making process. The shoe tongue making process comprises the steps of forming a wall groove in the thickness face of the top end of foam, wherein the distance between the wall groove and the outer surface of the foam is 2-3 mm; overlaying a tongue face with a tongue lining, and processing the top end of the tongue lining and the top end of the tongue face to form a joint portion; sewing the tongue lining and the tongue face together along the lower side of the joint portion; spraying glue onto the inner surface of the tongue face for enabling the tongue face to be attached to the foam, wherein the top end of the foam is located below a sewing thread by a distance of 2-3 mm; overturning the tongue lining to wrap the foam, guiding the joint portion into the wall groove by means of an auxiliary tool during overturning, and making the arc at the overturning position between the tongue lining and the top end of the foam smooth by means of an auxiliary tool; opening the lower end of the tongue lining, spraying glue onto the inner surface of the tongue lining and / or the back side, facing the tongue lining, of the foam, and laminating the tongue lining and the foam after glue spraying; and conducting sewing with a sewing machine along the lower-end arcs of the tongue lining and the tongue face, so as to form a closed sewn structure. By the adoption of the shoe tongue making process, the arc of the upper end of a shoe tongue can be smooth, and quality is stable and controllable due to the adoption of standard operation.

The invention belongs to the technical field of welding materials and particularly relates to a nickel-based welding rod used for ultralow-temperature steel and a preparation method of the nickel-based welding rod. The welding rod comprises a welding core wire, chemical powder and an adhesion agent; the mass ratio between the chemical powder and the welding rod is 25-27:100, and the mass ratio between the chemical powder and the adhesion agent is 100:25-30. When the welding rod prepared through the preparation method is welded, the electric arc is stable, the splatter is slight, the sediment separation is good, the form is beautiful, the welding can be conducted through alternate currents or direct currents, and the all-position operation performance is good. The nickel-based welding rod is mainly used for the nickel-based alloy welding with heat resistance and corrosion resistance requirements, and the nickel-based welding rod can also be used for the welding of some alloy hard to weld and dissimilar steel.