37results about How to "Consistent machining accuracy" patented technology

The invention provides a universal fixture for a sealing surface of a valve body for a vertical lathe and a clamping method thereof. The universal fixture comprises a fixture body, wherein the included angle between the upper surface of the fixture body and the horizontal direction is 5 degrees, so that the consistency and accuracy of the angles of the processed sealing surfaces of the valve bodies of wedge gate valves or swing check valves are effectively ensured. The fixture body is of an axially symmetric structure, and such a structure can be used for overcoming the defects that fixtures in the prior art generally have poor universality for valve bodies of wedge gate valves or swing check valves which are different in size, specification and model, accurate symmetry of positions of two opposite valve body sealing surfaces is difficult to ensure, the consistency and accuracy of angles of the valve body sealing surfaces are difficult to ensure and the assembly and disassembly of the valve body of the wedge gate valve or the swing check valve is inconvenient.

The present invention relates to a parallel femtosecond laser two-photon photopolymerization micron nano processing method and its equipment. Said equipment includes the following several portions: pump laser, femtosecond laser, resonant cavity, amplifier, reflecting mirror, attenuator, optical gate, fibre-optic coupler, microlens array, three-dimensional scanning platform and its driven and computer control system. Said invention also provides the concrete steps of its processing method.

The invention belongs to mechanical processing tools, and relates to a hand-held deep and small hole composite deburring device for miniaturization of complex shell parts. The deburring device includes a worktable, a fixed support frame, a vibration generator, and a vibration converter equipped with a deburring tool. The fixed support frame and the vibration generator are placed on the workbench, and the vibration converter equipped with a deburring tool passes through the steel belt. Installed on a fixed support bracket, the vibration converter of the deburring tool is connected with the vibration generator, the grinding powder container is installed on the workbench, the water container is higher than the grinding powder container and placed on the workbench; the deburring tool is connected with the vibration converter , The deburring tool is a cylindrical slender metal rod, and the center of the front end of the metal rod has a transparent opening rectangular groove with a width of 0.25 mm to 0.3 mm, and the depth of the rectangular groove is 3 to 5 times the diameter of the metal rod. The invention is suitable for deburring deep and small holes with a length-to-diameter ratio greater than 40 and a diameter less than Ф3 mm, and the processing efficiency is increased by more than 50% to 70%.

The invention provides a spatial phase modulation round traveling wave ultrasonic motor with symmetrical ceramic zones and a control method of the ultrasonic motor. The ultrasonic motor comprises piezoelectric ceramics. The piezoelectric ceramics comprise A1-zone piezoelectric ceramics, A2-zone piezoelectric ceramics, B3-zone piezoelectric ceramics and B4-zone piezoelectric ceramics. All ceramic zones are arrayed according to the A1-zone piezoelectric ceramics, the A2-zone piezoelectric ceramics, the B4-zone piezoelectric ceramics and the B3-zone piezoelectric ceramics along the circumference in space and are separated from one another by a quarter of wavelength, and each ceramic zone takes up two wavelengths in space. The width of each polarized zone of the piezoelectric ceramics is one-half wavelength. According to the counter-clockwise direction, the polarized directions of all polarized zones of the piezoelectric ceramics are sequentially arrayed according to a positive and negative alternating sequence. The motor and the control method thereof have all the functions and advantages of a traditional spatial phase modulation round traveling wave ultrasonic motor with a subdivided ceramic structure, moreover, each polarized zone of the piezoelectric ceramics is wider, all polarized zones of each zone of piezoelectric ceramics keep continuous in space, and processing and manufacture are more convenient and accurate.

The invention provides a space phase modulation based ring-type traveling-wave ultrasonic motor with asymmetric ceramic subareas and a control method of the space phase modulation based ring-type traveling-wave ultrasonic motor with the asymmetric ceramic subareas. Piezoelectric ceramics comprise area-A1 piezoelectric ceramics, area-A2 piezoelectric ceramics, area-B3 piezoelectric ceramics and area-B4 piezoelectric ceramics, wherein the ceramics in every area occupy two wavelengths in space, the area-A1 piezoelectric ceramics and the area-B4 piezoelectric ceramics have the same space phases, the area-A2 piezoelectric ceramics and the area-B3 piezoelectric ceramics have the same space phases, the area-A1 piezoelectric ceramics and the area-A2 piezoelectric ceramics have a difference in one quarter wavelength in space, the area-B3 piezoelectric ceramics and the area-B4 piezoelectric ceramics have a difference in one quarter wavelength in space, and polarization directions of polarization subareas of the piezoelectric ceramics in all the areas are arranged according to '+-+-' sequentially. The space phase modulation based ring-type traveling-wave ultrasonic motor with the asymmetric ceramic subareas has all the advantages and functions of traditional space phase modulation based ring-type traveling-wave ultrasonic motors with subdivided ceramic structures, every polarization subarea of the piezoelectric ceramics is wider, all the polarization subareas of the piezoelectric ceramics in every area can keep continuous in space, and accordingly processing and manufacturing are facilitated and processing and manufacturing precision is improved.

The invention provides a rotating assembly capable of effectively decreasing stagger amount of a foot operated valve. The rotating assembly comprises a connecting plate, wherein left and right rotating seats are arranged on the connecting plate; the rotating seats are connected with the connecting plate through hinge pins; the bottom ends of the two side surfaces of the rotating seats are concave inwards to form end faces; the two ends of the bottom surfaces of the rotating seats are oblique upwards to form upper oblique surfaces; the bottoms of the end faces and the tops of the upper oblique surfaces intersect with each other to form limiting parts; and grooves are formed in the parts, corresponding to the limiting parts of the two rotating seats, on the connecting plate. According to the rotating assembly, through utilizing a surface processing method, the parts where the rotating seats and the connecting plate are in mutual contact are formed through processing of a machine tool, the processing accuracy is uniform, the dimensional tolerances of horizontal distances and vertical distances from the limiting parts in the rotating seats to the centers of the hinge pins, and the dimensional tolerance of horizontal distances from the upper plane of the connecting plate to the centers of the hinge pins are decreased, and the deflection angle difference of the two rotating seats does not exceed the design requirement; and the device is simple in structure, the stagger amount of the two rotating seats of the foot operated valve is effectively decreased, and the ex factory pass rate of the foot operated valve is increased.

A universal clamp for the sealing surface of a valve body used in a vertical machine tool and a clamping method thereof, including a clamp body, the upper surface of the clamp body forms an included angle of 5 degrees with the horizontal direction, effectively ensuring that the processed wedge The consistency and accuracy of the angle of the sealing surface of the valve body of the gate valve or the sealing surface of the valve body of the swing check valve. The clamp body has an axisymmetric structure, which avoids the poor versatility of the clamps in the prior art for valve bodies of wedge gate valves of various sizes and models or valve bodies of swing check valves. , It is difficult to ensure the exact symmetry of the positions of the two relative valve body sealing surfaces, it is difficult to ensure the consistency and accuracy of the valve body sealing surface angle, and the valve body of the wedge gate valve or the valve body of the swing check valve is loaded and unloaded Inconvenient downside.

The invention discloses a tilting-pad thrust bearing supported through an elastic disc. The tilting-pad thrust bearing is mainly composed of a thrust disc (1), a tilting material layer (2), the elastic disc (3) and a copper ring (4). The copper ring (4) is bonded to the lower surface of the elastic disc (3) and has the functions of supporting the elastic disc (3) and improving the strength of the elastic disc (3). The tilting material layer (2) is bonded to bosses (5) of the elastic disc and used for bearing axial thrust from the thrust disc (1). The tilting-pad thrust bearing has the beneficial effects of being simple in structure, convenient to machine and the like; the integral machining manner is adopted in the elastic disc, and it can be guaranteed that tiles have high planeness; and according to the thrust bearing, the character of deformation coordination of elastic materials is ingeniously utilized, and the thrust bearing has outstanding performance in the aspects of vibration reducing, noise lowering, tile load equalizing, lubricating and the like.

The invention relates to a flat spring automatic centering double-head lifting lug boring device, which belongs to the technical field of mechanical flat spring boring processing. Including the workbench, there is a clamping assembly in the middle of the worktable, and a boring head assembly is installed on both sides of the clamping assembly; the boring head assembly includes a boring tool assembly, which is connected to the Z-axis adjustment mechanism, and the Z-axis adjustment mechanism One side is equipped with a Y-axis adjustment mechanism, the Y-axis adjustment structure is set on the X-axis adjustment mechanism, and the X-axis adjustment mechanism is set on the workbench; the front end of the boring tool is equipped with a positioning component, which is used to position and fix the reed; the clip The clamping assembly includes a clamping cylinder, which is set on the clamping bracket, the piston rod of the clamping cylinder is connected to the clamping seat, the positioning roller is arranged on the outside of the clamping seat, the clamping cylinder is arranged on the inside of the clamping seat, and the clamping cylinder Set in conjunction with the positioning roller. The positioning accuracy of the invention is high, the center points of the lifting lugs at both ends of the processed reed are on the same axis, and the product accuracy is high.

The invention provides a workpiece automatic machining system and a grinding method of the surface of a workpiece, and belongs to the technical field of machines. The problems that an existing grinding polishing machine is not unified in machining precision and not uniform in workpiece forming are solved. The workpiece automatic machining system comprises a machining center which conducts machining work on the workpiece, and further comprises a grinding unit which is adjacent to the machining center. The grinding unit is provided with a mechanical arm and a plurality of grinding machines, and the mechanical arm can clamp and convey the workpiece which has been machined at the machining center to the grinding machines to be ground. The workpiece automatic machining system and the grinding method of the surface of the workpiece have the advantages of being high in automatic degree, good in uniformity of workpiece forming, high in grinding precision and the like.

The invention relates to a universal valve body sealing surface clamp for a horizontal machine tool and a clamping method of the universal valve body sealing surface clamp. The universal valve body sealing surface clamp for the horizontal machine tool comprises a clamp body adopting an axisymmetric structure, and is connected with the spindle of the horizontal machine tool; and a 5-degree included angle is formed between the universal valve body sealing surface clamp and the vertical direction. Such a structure avoids the defect that a clamp in the prior art generally has poor universality for the valve bodies of wedge gate valves or swing check valves of various sizes, specifications and models, can hardly ensure accurate symmetry of the positions of two opposite valve body sealing surfaces and the consistency and accuracy of the angles of the valve body sealing surfaces, and cannot load and unload the valve bodies of wedge gate valves or swing check valves conveniently.

The invention discloses a ferrule perforation method, belonging to a machining method. The traditional operation of perforating a ferrule is finished manually, which has the disadvantages of low efficiency, more inferior-quality products and inconsistent machining precision. The ferrule perforation method is characterized in that a feed channel conveys a ferrule to a material supporting rack; an electrical control system controls a clamping device to move to a backer, the electrical control system and the backer oppositely clamp two end surfaces of the ferrule on the material supporting rack so as to clamp the ferrule on a perforation workstation; electrical control system controls a perforation device to feed to radially perforate the ferrule on the punching workstation; and after the operation of perforation is finished, the electrical control system controls the perforation device to retract, the clamping device is reset, and a charging ram pushes down processed ferrule from the material supporting rack. With the ferrule perforation method, equipment replaces manpower to machine the ferrule, the electrical control system control equipment to work, efficiency is improved, inferior-quality products are reduced, and machining precision is guaranteed to be consistent.

The invention provides a space phase modulation-based ring-type traveling wave ultrasonic motor with asymmetric ceramic subareas and a control method thereof. Piezoelectric ceramics comprise area-A1 piezoelectric ceramics, area-A2 piezoelectric ceramics, area-B3 piezoelectric ceramics and area-B4 piezoelectric ceramics, wherein the ceramics in every area occupy two wavelengths in space, the area-A1 piezoelectric ceramics and the area-B4 piezoelectric ceramics have the same space phases, the area-A2 piezoelectric ceramics and the area-B3 piezoelectric ceramics have the same space phases, the width of each polarization subarea of the piezoelectric ceramic is a 1 / 2 wavelength, polarization directions of any three piezoelectric ceramic subareas are arranged according to '+-+-' sequentially in an anticlockwise direction, and the polarization directions of the other piezoelectric ceramic subarea arranged according to '-+-+' sequentially. The motor and the control method thereof have all the advantages and functions of traditional space phase modulation-based ring-type traveling-wave ultrasonic motors with subdivided ceramic structures, every polarization subarea of the piezoelectric ceramics is wider, all the polarization subareas of the piezoelectric ceramics in every area can keep continuous in space, and processing and manufacturing are facilitated and processing and manufacturing precision is improved.