49results about How to "Improve dynamic balance accuracy" patented technology

The invention discloses a forming method of an integrated plate welded-joint-free vehicle wheel. The forming method includes the following steps: conducting rolling, preliminarily forming a rim and spokes, conducting roll forming, and conducting compression shaping to manufacture the integrated plate welded-joint-free vehicle wheel. According to the forming method of the integrated plate welded-joint-free vehicle wheel, due to the fact that the plate welded-joint-free vehicle wheel is formed through cold rolling, cold roll forming and cold extruding, energy consumption is reduced by 45% to 55%, and the material cost is reduced by 5% to 15%; meanwhile, the strength of the vehicle wheel is improved by 20% to 30%. By means of the forming method, the unequal-thickness vehicle wheel which is unequal in section thickness and meets the mechanical strength requirement at the same time can be formed in a cold rolling mode; in addition, the accuracy grade of the vehicle wheel can be greatly increased, and the deflection amount and the jerk amount of the vehicle wheel are reduced to be minimum; in addition, the vehicle wheel produced with the method is better in safety performance, and the conventional air-tight test is not needed; correspondingly, the invention further discloses the integrated plate welded-joint-free vehicle wheel manufactured with the forming method of the integrated plate welded-joint-free vehicle wheel.

The invention relates to a brake disc processing technology, step 1: rough and fine car brake disc small end two friction surfaces; step 2: rough and fine car brake disc big end two friction surfaces; step 3: processing the brake disc big end Holes on the end face and small end face; Step 4: Dynamic balance and weight removal inspection; when turning the large end face and small end face of the brake disc, double-end turning tools are used to improve processing efficiency and ensure the stability of the braking effect. When processing the holes of the big end face and small end face of the brake disc, the fourth-axis rotary table is used to realize the end face hole processing, and the process merging is considered in the process design to reduce the process turnover bump. The dynamic balance de-weight detection adopts the tensioning fixture to improve the dynamic balance accuracy of the brake disc product, and realizes the same self-centering clamping function through the expansion force of the expansion sleeve to expand and open the expansion flap, which can not only meet the balance process requirements of the brake disc It can also reduce the manufacturing cost of the process fixture.

The invention discloses a dynamic balance test and correction system for a diamond micro-diameter milling cutter. The system includes two parts: a micro-grinding workbench and a dynamic balance measurement workbench, wherein: the micro-grinding workbench includes a precision air-floating spacer Vibration platform, base, precision motion table, piezoelectric ceramics, electric control rotary table, collet, CCD camera, CCD mounting frame, vertical one-dimensional precision guide rail, connecting plate, two-dimensional precision motion platform A, grinding axis Mounting frame, high-speed grinding spindle, pneumatic chuck A, grinding wheel grinding head, two-dimensional precision motion platform B; the dynamic balance measurement table includes photoelectric sensor, industrial computer, vibration sensor, dynamic balance spindle, pneumatic chuck B and Dynamic balancer. The system can detect the dynamic balance of the micro-milling cutter and deal with the unbalanced amount, and can solve the problem that the precision of the diamond micro-milling cutter is reduced during the micro-milling process due to the dynamic unbalanced amount after the diamond micro-milling cutter is prepared or worn.

Fully dynamically balanced couplings, including half-couplings at the power input end, half-couplings at the power output end, input end jackets, output end jackets, intermediate sections, diaphragm sets, infrared probes, key phase magnetic strips and accessories Heavy flange; the input end sheath and the output end sheath are respectively set on the shaft hubs of the power input half coupling and the power output half coupling through the counterweight flange; the input end sheath passes through the intermediate section It is connected with the output end sheath; the diaphragm group is set between the input end sheath, the output end sheath and the intermediate section; the key phase magnetic strip is set on the power input end half coupling or the power output end half coupling method on the blue plate; the infrared probe is set on the upper end of the key phase magnetic strip; the counterweight flange is provided with a counterweight screw hole. For the unit equipped with the coupling of the present invention, the key phase magnetic strip, the infrared probe and the shaft vibration detection instrument of the unit itself can be used together to determine the unbalanced mass and phase, and only one stop is required. The screw plug of unbalanced mass is screwed into the heavy screw hole to obtain accurate dynamic balance of the unit.

The invention discloses a shafting structure for a motor, and an assembling method. The shafting structure comprises a front-segment shaft (62), a rear-segment shaft (63), annular magnetic steel (61) and an alloy sheath (60), wherein the rear-segment shaft (63) successively comprises a first shaft joint (631) and a second shaft joint (633) from front to back, and the diameter of the first shaft joint (631) is smaller than that of the second shaft joint (633); the annular magnetic steel (61) sleeves the first shaft joint (631) of the rear-segment shaft (63); the external diameter of the rear end of the front-segment shaft (62) is the same as the external diameter of the annular magnetic steel (61); and the alloy sheath (60) sleeves the front-segment shaft (62) and the annular magnetic steel (61). According to the scheme provided by the invention, the shafting structure and the assembling method overcome the defects of complex structure, large assembling difficulty, poor safety and the like in the prior art and also have the advantages of simple structure, small assembling difficulty and good safety.

The invention relates to the technical field of molds and particularly relates to a mold for a worm wheel of an automobile worm wheel supercharger. The mold comprises a fixed mold bottom plate, a stripping plate, a fixed mold plate, a fixed mold core, line assemblies, a movable mold core, a movable mold plate, a movable mold base plate, square iron, a top needle plate, a bottom needle plate and a movable mold bottom plate, wherein the line assemblies are arranged at the peripheries of the mold cores; each line assembly comprises a line push seat, a line slide seat, a line upper insert, a line lower insert, line guide blocks, a line stopping block and an inclined guide column; each line push seat is mounted on the movable mold base plate and the upper part of the line push seat is inserted into the corresponding line slide seat; each line slide seat is provided with an inclined groove; each line lower insert is embedded into the corresponding inclined groove from the front end of each line slide seat; each line upper insert is embedded into the top surface of the corresponding line lower insert from the rear end of the corresponding line lower insert; the line guide blocks are fixedly arranged on the two sides of a corresponding slide groove; the line stopping blocks are stopped and pressed at the rear ends of the corresponding line inserts; and the inclined guide columns obliquely penetrate through the movable mold base plate from the fixed mold plate. The mold is used for forming the high-precision and high-quality worm wheel, and the dynamic balance precision of the worm wheel is improved.

The invention discloses a range hood comprising a casing, a draught fan volute assembly and a cleaning device, wherein the draught fan volute assembly is mounted on the casing and comprises an impeller with blades; the cleaning device is mounted on the casing and is provided with a spray pipe, the spray pipe is provided with spray holes, and the spray holes are positioned in an inner cavity of the impeller and are used for cleaning a part of the blades at the lowest position. The range hood of the embodiment can realize automatic cleaning, and has the advantages of small noise, long service life, reliable performance and the like.