34results about How to "Improve machining accuracy" patented technology

The invention belongs to the technical field of coat hanger processing and making. A coat hanger rough planer comprises a rough planer working platform, an edge planer used for planing the edges of acoat hanger is arranged on the rough planer working platform, a profiling plate capable of moving along the surface of the rough planer working platform is further arranged on the rough planer workingplatform, a coat hanger template is arranged on the profiling plate, one end of the coat hanger template is aligned to one end of the profiling plate, positioning blocks used for fixing the coat hanger are separately arranged on the two sides of the coat hanger template, and a clamp used for clamping the coat hanger is arranged between the positioning blocks. The coat hanger rough planer can improve the coat hanger curved surface processing precision, the coat hanger curved surface processing uniformity is good, and the coat hanger rough planer has the beneficial effects of being safe and reliable in work, easy and convenient to process and operate, high in processing speed and high in production efficiency.

A fastener hole centering drilling device for a seat guide rail in a lower pound column area of a passenger-to-cargo airplane comprises a support, a center positioning device, a reversing support and N drilling positioning devices. When the fastener hole centering drilling device is used, a seat guide rail profile is placed in the support, then the center positioning device is inserted in a round clamping hole, afterwards, the drilling positioning devices are inserted into another round clamping hole needing to be drilled, drill bits move downwards along guide holes, and a hole can be drilled in a drilling surface. Since the diameters of the guide holes in different drilling positioning devices can be different, the drilled hole can be broadened step by step from a small hole to a large hole by constantly changing the drilling positioning devices, and the retrofitting standards of Boeing aircrafts are met. Since the guide holes are perpendicular to the drilling surface all the time, the drilling perpendicularity is ensured effectively, and fasteners are concentric with the round clamping holes of the seat guide rail profile after being installed. The machining efficiency is improved, and the machining precision is improved.

The invention discloses an elastic clamp applied to flat tongs for clamping special-shaped parts. The elastic clamp is characterized in that elastic jaws are integrated elastic structural plates provided with flexible hinges, and cavities used for placing clamped parts and double-oscillating-bar structures with the flexible hinges are arranged on the elastic jaws. A swinging jaw is arranged on a swinging jaw base through a swinging axle, can swing surrounding the swinging axle, and achieves limiting and resetting during swinging through a limit axle and an O-shaped seal ring. An elastic jaw base and the swinging jaw base are arranged at the positions of jaws of the flat tongs. The elastic clamp can clamp two special-shaped parts in one step on single-jaw flat tongs, accordingly part clamping time is shortened, the processing efficiency of machine tools is improved, positioning accuracy and repeated clamping accuracy of the clamped parts are improved, and further the processing accuracy of the parts is improved.

The invention discloses a low-temperature-drift relative plane mounting differential integrated resonant accelerometer. The accelerometer comprises a metal base, a first double-end clamped quartz tuning fork and a second double-end clamped quartz tuning fork, the metal base comprises a metal base, a first flexible hinge, a second flexible hinge, a mass block and a metal outer frame, the mass blockis connected with the metal base through the first flexible hinge and the second flexible hinge, and the left side, the right side and the front side of the metal base are connected with the metal outer frame; the first double-end clamped quartz tuning fork and the second double-end clamped quartz tuning fork have the same structure, are attached to the front surface and the back surface of the metal base and are arranged in a differential mode; the first flexible hinge and the second flexible hinge have elastic characteristics in a sensitive direction SA. The accelerometer can reduce the influence of packaging stress and thermal stress on the output of the accelerometer, and has the advantages of high sensitivity, small temperature drift, high precision, small size and the like.

The invention discloses a fish cooking device and a control method. The fish cooking device comprises a computer, a controller, a steam box, a display device arranged on the steam box, a steam inlet pipe and n temperature sensors arranged on the steam box, and a dimension measurement mechanism, wherein the dimension measurement mechanism comprises a box body with an opening in the lower end, m first swinging structures connected with a cover plate of the box body in a rotating manner, and m+2 angle sensors arranged on the cover plate; the opening is formed in the lower part of one side of the box body, and second swinging structures are arranged in the front of and at the back of the interior of the lower part of the box body. The fish cooking device has the characteristics of high processing efficiency and high processing precision.

The invention discloses a turning method for inner hole deep grooves and belongs to the technical field of metal machining. The turning method comprises a rough turning process and a finish turning process and further comprises a semi-finish turning process which is after the rough turning process and before the finish turning process. For the non-sloped deep grooves, the semi-finish turning allowance is 0.05 mm-0.15 mm; for the sloped deep grooves, the inclined wall surfaces of the deep grooves are machined at first through semi-finish turning and finish turning, then the straight wall surfaces of the deep grooves are machined, and the semi-finish turning allowance is 0.05 mm-0.10 mm; for soft materials, the round corners of cutters for semi-finish turning and finish turning are both R 0.2; and for hard materials, the round corners of cutters for semi-finish turning and finish turning are both R 0.4. According to the turning method for the inner hole deep grooves, the machining quantity of finish machining can be decreased by adding the semi-finish turning process, thus, the acting force of the cutting force on the parts is reduced, the deformation quantity is effectively reduced, and the machining precision is improved; and meanwhile, the strategy that the inclined wall surfaces of the sloped deep grooves are preferentially machined, and then the straight wall surfaces are machined is further adopted, the strength of the inclined wall surfaces is strengthened, the turning deformation of the inclined wall surfaces is weakened, and hence the turning quality and the machining precision of the whole deep grooves are further improved.

The invention relates to a three-claw cutter head which comprises a cutter frame and blades. The cutter frame is of a rotation body structure. Three supports which are distributed at equal intervals are arranged on the edge of the cutter frame in a protruding and extending manner, and the three supports incline around the cutter frame in the anticlockwise direction. An installation hole is formedin the center of the cutter frame. A clamping body penetrating the installation hole is installed on one side of the cutter frame. The cutter frame is installed on machining equipment through the clamping body and the installation hole. The blades are fixed to installation frames arranged on the three supports and arranged in the anticlockwise direction, wherein the cutting edges of the blades arehigher than the upper plane and the outer side face of the cutter frame. The three-claw cutter has the beneficial effects that due to the design of the cutter frame and the installation manner of theblades, the cutter head can be suitable for machining the step face inner wall precision of parts or the inner hole wall precision of the parts and has the beneficial effects that the machining precision is high, clamping is convenient, and two purposes are integrated.

The invention provides a manipulator positioning method for polishing a spatial curved surface of an optical element. The manipulator positioning method is used for solving the positioning problem when a manipulator polishes the spatial curved surface in the prior art and improving the positioning precision. The manipulator positioning method comprises the steps that a right-angle mark is machinedin a certain positioning area on the optical element to serve as a workpiece coordinate system, and then the element is fixed to a workbench; the manipulator is controlled to machine at least three resident spots in the positioning area, and the sequential connecting lines of the three resident spots form a right angle to serve as a machining coordinate system; and the coordinates of the three resident spots in the workpiece coordinate system and the diameter size of the maximum diameter are measured, the spatial position relation of the machining coordinate system relative to the workpiece coordinate system is calculated, and the manipulator is adjusted to complete positioning according to the spatial position relation. According to the manipulator positioning method, manipulator positioning during spatial optical curved surface polishing is completed, positioning is accurate, the manipulator positioning method is suitable for the technological processes of spatial curved surface andoff-axis aspheric surface polishing and the like, the machining precision is high, and meanwhile the polishing efficiency of the spatial curved surface is improved.

The invention discloses a rotor three-in-one combined pressing die which comprises a fixing base (1), a supporting plate (2) is connected to the fixing base (1) in a sliding mode, an upper pressing plate (3) connected with the fixing base (1) in a sliding mode is arranged above the supporting plate (2), a pressing block (4) is arranged in the middle of the upper pressing plate (3), and a containing table (6) connected with the fixing base (1) is arranged below the supporting plate (2). The motor rotor can be integrally assembled through one-time press fit, and each rotor part is located at a fixed height position during press fit, so that the rotor three-in-one combined pressing die has the advantages of being short in assembly time, low in assembly cost and good in forming effect.

The invention discloses a crankshaft milling machining center, and relates to a milling machining machine tool for machining parts such as crankshafts. The center involves a left main shaft, a vertical milling shaft, a right main shaft and a clamping device used for clamping a crankshaft; a workbench of the clamping device is provided with two centering clamping mechanisms arranged left and right, an angle positioning mechanism, an axial positioning mechanism and two supporting frames; the centering clamping mechanisms can slide upwards in the axial direction of the crankshaft; the angle positioning mechanism can slide in the radial direction of the crankshaft; and the axial positioning mechanism is arranged on the workbench in the area between the two centering clamping mechanisms. According to the center, the left and right machining center main shafts and left and right magazine tools are adopted, automatic tool changing machining is realized, a vertical milling head is matched, an angle positioning surface is milled, and the full-automatic machining of the two ends of the crankshaft is realized by one-time clamping, so that the machining precision is improved, the machining efficiency is improved, moreover, the unbalance amount after crankshaft machining can be greatly reduced, and the final machining quality of the crankshaft is improved.

Although in a driving tool operating by an electric motor as a drive source, according to a background art, there has been provided a technology of engaging projected streaks having V-shapes in cross sections with a plurality of V grooves in order to achieve a high striking force by efficiently transmitting a rotational force of a drive wheel to a driver support base, high working accuracy is needed in that case, and therefore, according to the invention, it is enable to achieve a large striking force without need of high working accuracy. A driver support base (20) is provided with a transmitting portion (20b) having a V-shape in cross section, the driver support base (20) is pressed by a press member (41) to cause the transmitting portion (20b) to wedge between a pair of left and right drive wheels (30, 30), so that a friction force is increased to achieved a large drive force of the driver support base (20).

A numerical control electrolytic-mechanical composite machine tool comprises a machine body, a frame, a horizontal work bench, a numerical control double-revolving work bench, a protection box, a spindle head, an electrical spindle, a numerical control system, a pulse power supply, an electrolyte circulating device, and an X-direction transmission mechanism, a Z-direction transmission mechanism as well as a Y-direction transmission mechanism, wherein the electrical spindle, the pulse power supply, an electrolyte pump of the electrolyte circulating device, an X-direction servo motor, a Z-direction servo motor, a Y-direction servo motor, and a B revolving motor and a C revolving motor of the numerical control double-revolving motor are all controlled by the numerical control system. By controlling the relative movement of a composite cathode and an anode workpiece, the machine tool can process mold cavities and mold surfaces for complex workpieces, thus processing workpieces of different shapes. By changing different composite cathodes and adjusting different processing parameters, rough processing, finish processing and surface smoothing of one part can be achieved by one machine tool in different processing manners such as drilling, milling, cutting, grinding and polishing, thus eliminating installation error caused by repeated installation of workpieces.

The invention relates to an aluminum wheel hub base surface automatic turning lathe. According to the lathe, an aluminum wheel hub can be conveyed to a to-be-clamped area through a conveying device, the wheel hub is positioned and measured through an encoder device, a controller can be used for clamping and cutting a specific aluminum wheel hub product according to parameters of an encoder, a workpiece clamping and rotating device clamps the aluminum wheel hub through one clamping mechanism and then ascends and turns around, so that the aluminum wheel hub can rapidly reach a workpiece clampingstation for positioning and base surface turning, the machined aluminum wheel hub is taken away from the workpiece clamping station through the other opposite clamping mechanism so as to rapidly arrive at the conveying device for being discharged, the machining efficiency and the automation degree of the aluminum wheel hub are greatly improved, the production labor intensity is reduced, the laborcost is saved, the machining precision is high, and the lathe can be adapted to machining on multiple types of products.