366results about How to "Fit evenly" patented technology

The invention discloses a spiral hole milling device. The spiral hole milling device comprises an rotationsystem, a revolution system, a feeding system and an eccentricity adjusting system. An electric main shaft in the rotation system drives a milling cutter to rotate through a spring collet arranged on an output shaft of the electric main shaft. A revolution motor in the revolution system drives an inner sleeve to perform revolution relative to the axis of an outer sleeve through a small synchronous pulley, a synchronous belt and a large synchronous pulley. A feeding motor in the feeding system drives a feeding lead screw to enable a feeding nut to move so as to achieve feeding. An eccentricity adjusting mechanism in the eccentricity adjusting system controls motion of a shifting sliding block, a fixed anti-backlash nut and a movable anti-backlash nut remove the backlash of the eccentricity adjusting system, and therefore high-precision adjustment of the eccentricity can be achieved. A holding mechanism arranged on the inner sleeve achieves the aim that the shifting sliding block is held on the inner sleeve after the eccentricity adjustment is completed. The spiral hole milling device can be applied to integral, high-quality and high-efficiency hole forming of difficultly-machined materials in the aerospace field.

[Subject] A roller unit is provided which is improved in the service life of the seal as well as in the ease of unit assemblability.[Means for Solving the Problem] A track roller unit 10 having a roller 11 configured to roll in contact with a crawler belt 8, a roller shaft 12 for rotatably supporting the roller 11, and a seal 14 fit in an annular space 26 defined between the roller 11 and the roller shaft 12; wherein the seal 14 is formed such that an inner circumference side sealing portion 30a located on an inner circumference side and an outer circumference side sealing portion 30b located on an outer circumference side are fit together so as to come into slidable contact with each other; which further comprises a collar 15 mounted to the roller shaft 12; and wherein the collar 15 has a boss portion 62 into which the seal 14 is pressed and a flange portion 15b in contact with an outer end face of the seal 14.

A pillar trim on the vehicle-interior side of a pillar includes a pillar trim body located below an airbag and connected at its upper end part to the lower end of a top sealing member. A plurality of guide platforms are raised from the upper end part of the pillar trim body at spaced intervals in the vehicle front-to-rear direction to guide the inflation of the airbag towards the vehicle interior. The basal ends of each adjacent guide platforms are joined by a connecting part between the adjacent guide platforms. A groove for receiving the lower end of the top sealing member is formed between the vehicle-interior sides of the guide platforms and the pillar trim body. A through hole is vertically formed at least between the connecting part and the pillar trim body to open into the groove.

An instrument apparatus, includes a tachometer having a chaptering plate provided at a front surface thereof; a display unit arranged at the front surface of the chaptering plate; a printed circuit board arranged at a rear surface of the chaptering plate and driving the display unit. The display unit includes a projecting portion projecting toward the chaptering plate and a male terminal provided at a top end of the projecting portion. The chaptering plate includes an insertion hole formed into a similar shape as an outline of the projecting portion, in which the projecting portion is inserted. The printed circuit board is arranged at a position, in which an insert direction of inserting the projecting portion through the insertion hole and the printed circuit board intersect, and includes a female terminal to be fitted and electrically connected with the male terminal.

A corrugated hose for transporting a fluid has a multilayer construction including a resin layer as a barrier layer, an inner rubber layer and an outer rubber layer. The corrugated hose has a straight-walled portion, and a corrugated portion including corrugation valleys and corrugation hills, at least on one axial region of the corrugated hose. Each of the corrugation valleys has an inner diameter smaller than an inner diameter of the straight-walled portion, and each of the corrugation hills has an outer diameter equal to or smaller than an outer diameter of the straight-walled portion thereof.

A roller unit is provided which includes: (i) a roller configured to roll in contact with a crawler belt; (ii) a roller shaft for rotatably supporting the roller; (iii) a seal fit in an annular space defined between the roller and the roller shaft, wherein the seal is formed such that an inner circumference side sealing portion located on an inner circumference side and an outer circumference side sealing portion located on an outer circumference side and press-fit in the roller are fit together so as to come into slidable contact with each other; and (iv) a collar mounted to the roller shaft, wherein the collar has a boss portion onto which the inner circumference side sealing portion is pressed and a flange portion disposed on an atmosphere side of the inner circumference side sealing portion.A gap is formed between an end face of the outer circumference side sealing portion and the flange portion and the flange portion is provided with a circumferentially extending groove formed on a side opposed to the outer circumference side sealing portion. The outer circumference side sealing portion is disposed so as to enclose the inner circumference side sealing portion, and the flange portion is brought into contact with an end face of the inner circumference side sealing portion located on the atmosphere side of the inner circumference side sealing portion.

A connector includes a female connector housing, that has a male terminal, and a male connector housing that has a female terminal for electrical connecting to the male terminal, and that is adapted to be fitted into the female connector. The male connector housing includes an inner housing which has the female terminal, and which is adapted to be fitted in the female connector housing so that the female terminal is connected to the male terminal, and an outer housing which is adapted to support the inner housing so that the inner housing is movable in a first direction in which the inner housing is fitted in the female connector housing and in a second direction perpendicular to the first direction. When the inner housing is fitted into the female connector housing, the inner housing is disposed so as to separate from the outer housing in the second direction with a first gap.

A method of early detection of scaling on internal surfaces of conduits of water processing equipment, is provided herein. The method includes: transmitting ultrasonic signals through the wall of the conduits; deriving data samples from received ultrasonic signals or reflections thereof; calculating a moving average of the scatter of the ultrasonic signals, over time, based on the data samples; applying a statistical operand to the moving average, to yield a statistical distribution metric; determining a dynamic window defined by: (i) an upper boundary being the moving average plus at least a fraction of the statistical distribution metric and (ii) a lower boundary being the moving average minus the at least a fraction of the statistical distribution metric; generating a trend line being a smooth fitting of the derived samples; and monitoring the trend line within the window to detect a crossover of the trend line at either of the boundaries.

The invention belongs to the technical field of inkjet printing micro-manufacturing, and discloses an ink droplet border aligning optimizing method for nano silver inkjet printing and a printer. The ink droplet boarder aligning optimizing method includes the steps that a relationship equation of the negative pressure and the ink droplet distance is obtained by fitting according to measuring the relationship between negative pressure values of different piezoelectric nozzles and the radius of a jetted nano silver ink droplet; a to-be-printed part in a printing model of the model surface is determined in a computer, and the to-be-printed part is separated and stored in a STL format; a beginning printing start coordinate and the printing interval length are calculated according to a G code provided with a jet interval command, the ink droplet radius supplementation is conducted on the printing length according to the radius of the ink droplet, and the ink droplet radius is stored in printing length variable values; the ink droplet distance in the printing process is determined according to the optimized printing length and the ink droplet radius, and the ink droplet falling point initial planning is conducted; a conductive figure surface is printed; and execution of all execution codes is completed, and a conductive figure is obtained. According to different base materials, the negative pressure is adjusted so as to change the size of the ink droplet to adapt to the base materials, and thus the uniformity of the border of the conductive figure is improved effectively.

A multiple plug connector unit 20 has a plurality of plugs 30, 40 each including a plurality of contacts 40K and an insulator 40Z holding the plurality of contacts, a board 50 having patterns 53 and 54 to be soldered to lower ends 30K3 and 40K3 of the plurality of contacts 30K and 40K of the respective plugs 30 and 40, and a case 60 that collectively accommodates the respective plugs 30 and 40 and has holes 63 and 64 formed for making only fitting sections of the respective plugs exposed. At least one of the plurality of plugs has a movable structure between the respective fitting sections and soldered portions.

The invention provides a drawtube used for holding an optical element. The drawtube comprises the side wall of the drawtube and the bottom part of the drawtube. The side wall of the drawtube and the bottom part of the drawtube are provided with an inner surface; the bottom part of the drawtube is provided with a diaphragm hole. The drawtube is provided with at least one groove; the at least one groove extends from the inner surface of the side wall of the drawtube to the inner surface of the bottom part of the drawtube and stops at the edge of the diaphragm hole at the bottom part of the drawtube. The arrangement of the groove leads a lens to be capable of counteract a lens deformation caused by absorption when being assembled into the drawtube by adopting a vacuum absorption mode, thus ensuring the lens to be more smoothly stuck with the bottom part of the drawtube; and glue is pointed on the location of the groove after all the lenses are assembled, thus being capable of leading the glue to flow to the bottom part of the drawtube from the groove, thereby being capable of fixing a plurality of lens into the drawtube. The invention also provides a lens module provided with the drawtube and an assembling method of the lens module.