35results about How to "Large feed" patented technology

A relatively low cost, easy to install and aesthetically pleasing digital video broadcast from satellite (DVBS) elliptical horn antenna designed to receive satellite television broadcast signals with circular polarity. This type antenna may be implemented as a multi-beam, multi-band antenna with closely spaced antenna feed horns operable for simultaneously receiving signals from multiple satellites that are closely spaced from the perspective of the antenna.

When a relatively large image in the sub-scanning direction is to be printed, a relatively large number of dot-forming elements among a plurality of dot-forming elements are used to form dots by means of sub-scanning with a relatively large average feed. When a relatively small image in the sub-scanning direction is to be printed multiple times at different positions in the sub-scanning direction on the same print medium, a relatively small number of dot-forming elements among the plurality of dot-forming elements are used to form dots by means of sub-scanning with a relatively low average feed. With this embodiment, large images are rapidly printed, and small images are printed more efficiently on printing paper.

The invention discloses a clamp, the existing clamp is difficult to meet the using requirements of leading a guide rod to realize big-step feeding in neutral gear and obtaining greater clamping force during clamping, a fixed clamp body of the clamp comprises a grab handle which extends to the end which is not fixed with a clamping head and a fixed supporting part, a force application handle is arranged by corresponding to the grab handle, and a force application part for pushing a force application clamping piece, a first fulcrum part which is farther away from the force application part and a second fulcrum part which is nearer to the force application part are arranged on the force application handle, wherein an elastic element is connected between the first fulcrum part and the fixed clamp body, and the second fulcrum part is arranged by corresponding to the fixed supporting part. The clamp can lead the force application handle to act by taking the first fulcrum part as the fulcrumin the neutral gear, thereby leading the force application part of the force application handle to obtain a greater amount of feeding and realizing fast feeding; and the clamp can further lead the force application handle to act by taking the second fulcrum part as the fulcrum during clamping, thereby leading the force application part of the force application handle to obtain the greater clamping force.

The invention relates to a numerically-controlled pendulum shaft milling-grinding machine tool, and mainly solves the problems of low machining efficiency and instable accuracy during machining for large-diameter optical lenses, of an existing milling-grinding machine tool. The numerically-controlled pendulum shaft milling-grinding machine tool is characterized in that a pendulum shaft drive mechanism (7) and a vertical feeding mechanism (8) are connected to a milling-grinding head (1); and a horizontal feeding mechanism (5) and a rotary drive mechanism (9) are arranged on a workbench (3) respectively. The numerically-controlled pendulum shaft milling-grinding machine tool is high in rigidity, and capable of increasing the feeding amount on the basis of ensuring machining accuracy, thus increasing the machining efficiency and improving the machining accuracy of the machine tool.

The invention discloses a mechanical clamp type threading tool. The mechanical clamp type threading tool comprises a tool handle (1) and a tool bit body (2). The tool handle (1) is provided with a tool bit connecting base (3) used for installing the tool bit body (2). The mechanical clamp type threading tool is characterized in that the tool bit body (2) is of a cylindrical structure, the end of the tool bit body (2) is cut into a tool bit (4) along a plurality of cutting faces, and the tool bit connecting base (3) is provided with an installing hole (3.1) allowing the tool bit body (2) to be inserted therein; the tool bit body (2) is in sliding fit with the installing hole (3.1), a cutting edge (4.1) of the tool bit (4) is exposed out of the tool bit connecting base (3), and the tool bit connecting base (3) is provided with a fastening mechanism used for limiting the tool bit body (2) to move relative to the tool bit connecting base (3). The mechanical clamp type threading tool is large in cutting feed amount and high in cutting speed.

The invention provides a large environmentally-friendly multifunctional vertical type three-dimensional numerical control carving machine. An existing large carving machine is improved, the feed rate of a Z axis carving distance central shaft is increased, the Z axis carving distance central shaft is replaced by a Y cross beam for front-back moving feed, Z feed strokes move in the vertical column width, dead weight of the Y cross beam is about 3 tons, and therefore compared with a machine on the current market, in the front-back moving and cutting process of large carved ware workblanks of which the height and the width can reach more than 3 meters, stability is good, accuracy is high, mechanical strength and speed are higher, and the machining speed is increased by about three times to five times; in the workblank cutting process, by the combination of NC multi-axis programming post-processing paths, redundant materials of the workblanks are cut down block by block and are secondarily machined and utilized; due to the arrangement of a purification pool, sewage is purified and cyclically utilized, and therefore it is avoided that water is polluted and water resources are wasted. By the adoption of the three-dimensional numerical control carving machine, noise pollution and dust pollution are reduced, and the whole carving machine is more improved.

A novel shaping machine comprises a base, a machine body, a workbench, a main movement mechanism and a workbench feeding mechanism; the main movement mechanism comprises a ram fixedly mounted on the machine body, a first motor arranged at the upper end of the ram and a boring and milling spindle grinding head arranged at the front end of the ram; a synchronous transmission device is arranged between the first motor and the boring and milling spindle grinding head; a milling cutter disk is arranged at the bottom end of the boring and milling spindle grinding head; and the workbench feeding mechanism comprises a gear transmission mechanism arranged on the machine body and a belt pulley transmission mechanism, one end of the belt pulley transmission mechanism is arranged on the machine body, and the other end of the belt pulley transmission mechanism is arranged on the workbench. The main movement mechanism and the workbench feeding mechanism of the shaping machine are two completely independent mechanisms, main movement and feeding movement of the shaping machine are conducted simultaneously, and the machining efficiency is improved; and the main movement mechanism of the shaping machine is fixed on the machine body, so that the main movement of the shaping machine is relatively stable, and the machining precision is improved.